Finding the Fourth Proportional to 707,012.31, 976,661.06 and 680,764.29

Step by Step Solution

1. Step 1: Write the proportion equation
   707,012.31 : 976,661.06 = 680,764.29 : x
2. Step 2: Convert to fraction form
   707,012.31/976,661.06 = 680,764.29/x
3. Step 3: Cross multiply
   707,012.31x = 976,661.06 × 680,764.29
4. Step 4: Simplify right side
   707,012.31x = 664,875,973,081.55
5. Step 5: Solve for x
   x = 664,875,973,081.55/707,012.31
6. Step 6: Final answer
   x = 940,402.26