Finding the Fourth Proportional to 1,287,164.52, 1,930,839.12 and 340,524

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,164.52 : 1,930,839.12 = 340,524 : x
2. Step 2: Convert to fraction form
   1,287,164.52/1,930,839.12 = 340,524/x
3. Step 3: Cross multiply
   1,287,164.52x = 1,930,839.12 × 340,524
4. Step 4: Simplify right side
   1,287,164.52x = 657,497,060,498.88
5. Step 5: Solve for x
   x = 657,497,060,498.88/1,287,164.52
6. Step 6: Final answer
   x = 510,810.43