Finding the Fourth Proportional to 1,066,146.42, 1,471,139.90 and 684,689.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066,146.42 : 1,471,139.90 = 684,689.88 : x
2. Step 2: Convert to fraction form
   1,066,146.42/1,471,139.90 = 684,689.88/x
3. Step 3: Cross multiply
   1,066,146.42x = 1,471,139.90 × 684,689.88
4. Step 4: Simplify right side
   1,066,146.42x = 1,007,274,601,594.21
5. Step 5: Solve for x
   x = 1,007,274,601,594.21/1,066,146.42
6. Step 6: Final answer
   x = 944,780.74