Finding the Fourth Proportional to 1,118.39, 1,543.55 and 1,069.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.39 : 1,543.55 = 1,069.17 : x
2. Step 2: Convert to fraction form
   1,118.39/1,543.55 = 1,069.17/x
3. Step 3: Cross multiply
   1,118.39x = 1,543.55 × 1,069.17
4. Step 4: Simplify right side
   1,118.39x = 1,650,317.35
5. Step 5: Solve for x
   x = 1,650,317.35/1,118.39
6. Step 6: Final answer
   x = 1,475.62