Finding the Fourth Proportional to 1,552.56, 2,142.69 and 889.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.56 : 2,142.69 = 889.50 : x
2. Step 2: Convert to fraction form
   1,552.56/2,142.69 = 889.50/x
3. Step 3: Cross multiply
   1,552.56x = 2,142.69 × 889.50
4. Step 4: Simplify right side
   1,552.56x = 1,905,922.76
5. Step 5: Solve for x
   x = 1,905,922.76/1,552.56
6. Step 6: Final answer
   x = 1,227.60