Finding the Fourth Proportional to 1,111.32, 1,533.98 and 718.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.32 : 1,533.98 = 718.04 : x
2. Step 2: Convert to fraction form
   1,111.32/1,533.98 = 718.04/x
3. Step 3: Cross multiply
   1,111.32x = 1,533.98 × 718.04
4. Step 4: Simplify right side
   1,111.32x = 1,101,459.00
5. Step 5: Solve for x
   x = 1,101,459.00/1,111.32
6. Step 6: Final answer
   x = 991.13