Finding the Fourth Proportional to 1,552.42, 2,142.35 and 889.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.42 : 2,142.35 = 889.30 : x
2. Step 2: Convert to fraction form
   1,552.42/2,142.35 = 889.30/x
3. Step 3: Cross multiply
   1,552.42x = 2,142.35 × 889.30
4. Step 4: Simplify right side
   1,552.42x = 1,905,191.86
5. Step 5: Solve for x
   x = 1,905,191.86/1,552.42
6. Step 6: Final answer
   x = 1,227.24