Finding the Fourth Proportional to 1,123.62, 1,551.08 and 703.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.62 : 1,551.08 = 703.89 : x
2. Step 2: Convert to fraction form
   1,123.62/1,551.08 = 703.89/x
3. Step 3: Cross multiply
   1,123.62x = 1,551.08 × 703.89
4. Step 4: Simplify right side
   1,123.62x = 1,091,789.70
5. Step 5: Solve for x
   x = 1,091,789.70/1,123.62
6. Step 6: Final answer
   x = 971.67