Finding the Fourth Proportional to 1,047.42, 1,445.31 and 654.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.42 : 1,445.31 = 654.57 : x
2. Step 2: Convert to fraction form
   1,047.42/1,445.31 = 654.57/x
3. Step 3: Cross multiply
   1,047.42x = 1,445.31 × 654.57
4. Step 4: Simplify right side
   1,047.42x = 946,056.57
5. Step 5: Solve for x
   x = 946,056.57/1,047.42
6. Step 6: Final answer
   x = 903.23