Finding the Fourth Proportional to 1,352.16, 1,869.48 and 1,002.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,352.16 : 1,869.48 = 1,002.24 : x
2. Step 2: Convert to fraction form
   1,352.16/1,869.48 = 1,002.24/x
3. Step 3: Cross multiply
   1,352.16x = 1,869.48 × 1,002.24
4. Step 4: Simplify right side
   1,352.16x = 1,873,667.64
5. Step 5: Solve for x
   x = 1,873,667.64/1,352.16
6. Step 6: Final answer
   x = 1,385.68