Finding the Fourth Proportional to 1,147,028.88, 1,582,988.52 and 688,160.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147,028.88 : 1,582,988.52 = 688,160.72 : x
2. Step 2: Convert to fraction form
   1,147,028.88/1,582,988.52 = 688,160.72/x
3. Step 3: Cross multiply
   1,147,028.88x = 1,582,988.52 × 688,160.72
4. Step 4: Simplify right side
   1,147,028.88x = 1,089,350,519,674.93
5. Step 5: Solve for x
   x = 1,089,350,519,674.93/1,147,028.88
6. Step 6: Final answer
   x = 949,714.99