Finding the Fourth Proportional to 1,569.29, 2,166.32 and 1,038.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.29 : 2,166.32 = 1,038.50 : x
2. Step 2: Convert to fraction form
   1,569.29/2,166.32 = 1,038.50/x
3. Step 3: Cross multiply
   1,569.29x = 2,166.32 × 1,038.50
4. Step 4: Simplify right side
   1,569.29x = 2,249,707.30
5. Step 5: Solve for x
   x = 2,249,707.30/1,569.29
6. Step 6: Final answer
   x = 1,433.59