Finding the Fourth Proportional to 1,105.12, 1,652.55 and 898.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.12 : 1,652.55 = 898.04 : x
2. Step 2: Convert to fraction form
   1,105.12/1,652.55 = 898.04/x
3. Step 3: Cross multiply
   1,105.12x = 1,652.55 × 898.04
4. Step 4: Simplify right side
   1,105.12x = 1,484,052.52
5. Step 5: Solve for x
   x = 1,484,052.52/1,105.12
6. Step 6: Final answer
   x = 1,342.89