Finding the Fourth Proportional to 3,665.18, 5,498.15 and 1,068.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.18 : 5,498.15 = 1,068.12 : x
2. Step 2: Convert to fraction form
   3,665.18/5,498.15 = 1,068.12/x
3. Step 3: Cross multiply
   3,665.18x = 5,498.15 × 1,068.12
4. Step 4: Simplify right side
   3,665.18x = 5,872,678.64
5. Step 5: Solve for x
   x = 5,872,678.64/3,665.18
6. Step 6: Final answer
   x = 1,602.29