Finding the Fourth Proportional to 1,118.38, 1,543.56 and 1,069.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.38 : 1,543.56 = 1,069.18 : x
2. Step 2: Convert to fraction form
   1,118.38/1,543.56 = 1,069.18/x
3. Step 3: Cross multiply
   1,118.38x = 1,543.56 × 1,069.18
4. Step 4: Simplify right side
   1,118.38x = 1,650,343.48
5. Step 5: Solve for x
   x = 1,650,343.48/1,118.38
6. Step 6: Final answer
   x = 1,475.66