Finding the Fourth Proportional to 1,061.55, 1,591.23 and 752.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.55 : 1,591.23 = 752.67 : x
2. Step 2: Convert to fraction form
   1,061.55/1,591.23 = 752.67/x
3. Step 3: Cross multiply
   1,061.55x = 1,591.23 × 752.67
4. Step 4: Simplify right side
   1,061.55x = 1,197,671.08
5. Step 5: Solve for x
   x = 1,197,671.08/1,061.55
6. Step 6: Final answer
   x = 1,128.23