Finding the Fourth Proportional to 1,569.12, 2,351.61 and 1,403.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.12 : 2,351.61 = 1,403.61 : x
2. Step 2: Convert to fraction form
   1,569.12/2,351.61 = 1,403.61/x
3. Step 3: Cross multiply
   1,569.12x = 2,351.61 × 1,403.61
4. Step 4: Simplify right side
   1,569.12x = 3,300,743.31
5. Step 5: Solve for x
   x = 3,300,743.31/1,569.12
6. Step 6: Final answer
   x = 2,103.56