Finding the Fourth Proportional to 1,200,471.30, 1,656,872.01 and 771,287.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,471.30 : 1,656,872.01 = 771,287.94 : x
2. Step 2: Convert to fraction form
   1,200,471.30/1,656,872.01 = 771,287.94/x
3. Step 3: Cross multiply
   1,200,471.30x = 1,656,872.01 × 771,287.94
4. Step 4: Simplify right side
   1,200,471.30x = 1,277,925,399,436.56
5. Step 5: Solve for x
   x = 1,277,925,399,436.56/1,200,471.30
6. Step 6: Final answer
   x = 1,064,519.74