Finding the Fourth Proportional to 3,666.16, 5,498.52 and 1,069.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666.16 : 5,498.52 = 1,069.12 : x
2. Step 2: Convert to fraction form
   3,666.16/5,498.52 = 1,069.12/x
3. Step 3: Cross multiply
   3,666.16x = 5,498.52 × 1,069.12
4. Step 4: Simplify right side
   3,666.16x = 5,878,577.70
5. Step 5: Solve for x
   x = 5,878,577.70/3,666.16
6. Step 6: Final answer
   x = 1,603.47