Finding the Fourth Proportional to 1,605,892,337.28, 2,408,855,123.94 and 485,425,300.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605,892,337.28 : 2,408,855,123.94 = 485,425,300.41 : x
2. Step 2: Convert to fraction form
   1,605,892,337.28/2,408,855,123.94 = 485,425,300.41/x
3. Step 3: Cross multiply
   1,605,892,337.28x = 2,408,855,123.94 × 485,425,300.41
4. Step 4: Simplify right side
   1,605,892,337.28x = 1,169,319,222,182,742,272
5. Step 5: Solve for x
   x = 1,169,319,222,182,742,272/1,605,892,337.28
6. Step 6: Final answer
   x = 728,142,973.87