Finding the Fourth Proportional to 1,123.84, 1,550.82 and 658

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.84 : 1,550.82 = 658 : x
2. Step 2: Convert to fraction form
   1,123.84/1,550.82 = 658/x
3. Step 3: Cross multiply
   1,123.84x = 1,550.82 × 658
4. Step 4: Simplify right side
   1,123.84x = 1,020,439.56
5. Step 5: Solve for x
   x = 1,020,439.56/1,123.84
6. Step 6: Final answer
   x = 907.99