Finding the Fourth Proportional to 1,137.60, 1,569.98 and 659.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137.60 : 1,569.98 = 659.22 : x
2. Step 2: Convert to fraction form
   1,137.60/1,569.98 = 659.22/x
3. Step 3: Cross multiply
   1,137.60x = 1,569.98 × 659.22
4. Step 4: Simplify right side
   1,137.60x = 1,034,962.22
5. Step 5: Solve for x
   x = 1,034,962.22/1,137.60
6. Step 6: Final answer
   x = 909.78