Finding the Fourth Proportional to 1,931,978.88, 2,666,140.20 and 1,207,247.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931,978.88 : 2,666,140.20 = 1,207,247.52 : x
2. Step 2: Convert to fraction form
   1,931,978.88/2,666,140.20 = 1,207,247.52/x
3. Step 3: Cross multiply
   1,931,978.88x = 2,666,140.20 × 1,207,247.52
4. Step 4: Simplify right side
   1,931,978.88x = 3,218,691,144,422.30
5. Step 5: Solve for x
   x = 3,218,691,144,422.30/1,931,978.88
6. Step 6: Final answer
   x = 1,666,007.42