Finding the Fourth Proportional to 3,123.39, 4,685.78 and 1,175.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.39 : 4,685.78 = 1,175.61 : x
2. Step 2: Convert to fraction form
   3,123.39/4,685.78 = 1,175.61/x
3. Step 3: Cross multiply
   3,123.39x = 4,685.78 × 1,175.61
4. Step 4: Simplify right side
   3,123.39x = 5,508,649.83
5. Step 5: Solve for x
   x = 5,508,649.83/3,123.39
6. Step 6: Final answer
   x = 1,763.68