Finding the Fourth Proportional to 1,552.61, 2,142.98 and 889.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.61 : 2,142.98 = 889.86 : x
2. Step 2: Convert to fraction form
   1,552.61/2,142.98 = 889.86/x
3. Step 3: Cross multiply
   1,552.61x = 2,142.98 × 889.86
4. Step 4: Simplify right side
   1,552.61x = 1,906,947.73
5. Step 5: Solve for x
   x = 1,906,947.73/1,552.61
6. Step 6: Final answer
   x = 1,228.22