Finding the Fourth Proportional to 2,585.58, 3,880.17 and 1,123.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,585.58 : 3,880.17 = 1,123.98 : x
2. Step 2: Convert to fraction form
   2,585.58/3,880.17 = 1,123.98/x
3. Step 3: Cross multiply
   2,585.58x = 3,880.17 × 1,123.98
4. Step 4: Simplify right side
   2,585.58x = 4,361,233.48
5. Step 5: Solve for x
   x = 4,361,233.48/2,585.58
6. Step 6: Final answer
   x = 1,686.75