Finding the Fourth Proportional to 1,124.55, 1,690.83 and 981.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124.55 : 1,690.83 = 981.18 : x
2. Step 2: Convert to fraction form
   1,124.55/1,690.83 = 981.18/x
3. Step 3: Cross multiply
   1,124.55x = 1,690.83 × 981.18
4. Step 4: Simplify right side
   1,124.55x = 1,659,008.58
5. Step 5: Solve for x
   x = 1,659,008.58/1,124.55
6. Step 6: Final answer
   x = 1,475.26