Finding the Fourth Proportional to 1,112.32, 1,535.20 and 698.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.32 : 1,535.20 = 698.08 : x
2. Step 2: Convert to fraction form
   1,112.32/1,535.20 = 698.08/x
3. Step 3: Cross multiply
   1,112.32x = 1,535.20 × 698.08
4. Step 4: Simplify right side
   1,112.32x = 1,071,692.42
5. Step 5: Solve for x
   x = 1,071,692.42/1,112.32
6. Step 6: Final answer
   x = 963.47