Finding the Fourth Proportional to 1,101.67, 1,520.05 and 653.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.67 : 1,520.05 = 653.31 : x
2. Step 2: Convert to fraction form
   1,101.67/1,520.05 = 653.31/x
3. Step 3: Cross multiply
   1,101.67x = 1,520.05 × 653.31
4. Step 4: Simplify right side
   1,101.67x = 993,063.87
5. Step 5: Solve for x
   x = 993,063.87/1,101.67
6. Step 6: Final answer
   x = 901.42