Finding the Fourth Proportional to 1,091.52, 1,505.67 and 698.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.52 : 1,505.67 = 698.10 : x
2. Step 2: Convert to fraction form
   1,091.52/1,505.67 = 698.10/x
3. Step 3: Cross multiply
   1,091.52x = 1,505.67 × 698.10
4. Step 4: Simplify right side
   1,091.52x = 1,051,108.23
5. Step 5: Solve for x
   x = 1,051,108.23/1,091.52
6. Step 6: Final answer
   x = 962.98