Finding the Fourth Proportional to 2,558.50, 3,838.10 and 914.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558.50 : 3,838.10 = 914.70 : x
2. Step 2: Convert to fraction form
   2,558.50/3,838.10 = 914.70/x
3. Step 3: Cross multiply
   2,558.50x = 3,838.10 × 914.70
4. Step 4: Simplify right side
   2,558.50x = 3,510,710.07
5. Step 5: Solve for x
   x = 3,510,710.07/2,558.50
6. Step 6: Final answer
   x = 1,372.18