Finding the Fourth Proportional to 1,117.64, 1,542.52 and 1,068.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,117.64 : 1,542.52 = 1,068.42 : x
2. Step 2: Convert to fraction form
   1,117.64/1,542.52 = 1,068.42/x
3. Step 3: Cross multiply
   1,117.64x = 1,542.52 × 1,068.42
4. Step 4: Simplify right side
   1,117.64x = 1,648,059.22
5. Step 5: Solve for x
   x = 1,648,059.22/1,117.64
6. Step 6: Final answer
   x = 1,474.59