Finding the Fourth Proportional to 3,569.72, 5,353.62 and 1,070.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,569.72 : 5,353.62 = 1,070.31 : x
2. Step 2: Convert to fraction form
   3,569.72/5,353.62 = 1,070.31/x
3. Step 3: Cross multiply
   3,569.72x = 5,353.62 × 1,070.31
4. Step 4: Simplify right side
   3,569.72x = 5,730,033.02
5. Step 5: Solve for x
   x = 5,730,033.02/3,569.72
6. Step 6: Final answer
   x = 1,605.18