Finding the Fourth Proportional to 2,308,131.30, 3,185,342.28 and 1,390,648.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308,131.30 : 3,185,342.28 = 1,390,648.35 : x
2. Step 2: Convert to fraction form
   2,308,131.30/3,185,342.28 = 1,390,648.35/x
3. Step 3: Cross multiply
   2,308,131.30x = 3,185,342.28 × 1,390,648.35
4. Step 4: Simplify right side
   2,308,131.30x = 4,429,690,985,867.24
5. Step 5: Solve for x
   x = 4,429,690,985,867.24/2,308,131.30
6. Step 6: Final answer
   x = 1,919,167.68