Finding the Fourth Proportional to 3,665.12, 5,500.80 and 1,475.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.12 : 5,500.80 = 1,475.42 : x
2. Step 2: Convert to fraction form
   3,665.12/5,500.80 = 1,475.42/x
3. Step 3: Cross multiply
   3,665.12x = 5,500.80 × 1,475.42
4. Step 4: Simplify right side
   3,665.12x = 8,115,962.83
5. Step 5: Solve for x
   x = 8,115,962.83/3,665.12
6. Step 6: Final answer
   x = 2,214.38