Finding the Fourth Proportional to 1,569.56, 2,355.12 and 747.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.56 : 2,355.12 = 747.86 : x
2. Step 2: Convert to fraction form
   1,569.56/2,355.12 = 747.86/x
3. Step 3: Cross multiply
   1,569.56x = 2,355.12 × 747.86
4. Step 4: Simplify right side
   1,569.56x = 1,761,288.27
5. Step 5: Solve for x
   x = 1,761,288.27/1,569.56
6. Step 6: Final answer
   x = 1,122.16