Finding the Fourth Proportional to 1,123.41, 1,685.84 and 474.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.41 : 1,685.84 = 474.15 : x
2. Step 2: Convert to fraction form
   1,123.41/1,685.84 = 474.15/x
3. Step 3: Cross multiply
   1,123.41x = 1,685.84 × 474.15
4. Step 4: Simplify right side
   1,123.41x = 799,341.04
5. Step 5: Solve for x
   x = 799,341.04/1,123.41
6. Step 6: Final answer
   x = 711.53