Finding the Fourth Proportional to 1,552.50, 2,142.45 and 889.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.50 : 2,142.45 = 889.43 : x
2. Step 2: Convert to fraction form
   1,552.50/2,142.45 = 889.43/x
3. Step 3: Cross multiply
   1,552.50x = 2,142.45 × 889.43
4. Step 4: Simplify right side
   1,552.50x = 1,905,548.59
5. Step 5: Solve for x
   x = 1,905,548.59/1,552.50
6. Step 6: Final answer
   x = 1,227.41