Finding the Fourth Proportional to 1,540,028.05, 2,309,865.59 and 402,899.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540,028.05 : 2,309,865.59 = 402,899.98 : x
2. Step 2: Convert to fraction form
   1,540,028.05/2,309,865.59 = 402,899.98/x
3. Step 3: Cross multiply
   1,540,028.05x = 2,309,865.59 × 402,899.98
4. Step 4: Simplify right side
   1,540,028.05x = 930,644,803,807.46
5. Step 5: Solve for x
   x = 930,644,803,807.46/1,540,028.05
6. Step 6: Final answer
   x = 604,303.80