Finding the Fourth Proportional to 1,089,686.79, 1,502,915.72 and 707,836.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089,686.79 : 1,502,915.72 = 707,836.59 : x
2. Step 2: Convert to fraction form
   1,089,686.79/1,502,915.72 = 707,836.59/x
3. Step 3: Cross multiply
   1,089,686.79x = 1,502,915.72 × 707,836.59
4. Step 4: Simplify right side
   1,089,686.79x = 1,063,818,734,763.01
5. Step 5: Solve for x
   x = 1,063,818,734,763.01/1,089,686.79
6. Step 6: Final answer
   x = 976,261.02