Finding the Fourth Proportional to 1,826.50, 2,520.57 and 998.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,826.50 : 2,520.57 = 998.50 : x
2. Step 2: Convert to fraction form
   1,826.50/2,520.57 = 998.50/x
3. Step 3: Cross multiply
   1,826.50x = 2,520.57 × 998.50
4. Step 4: Simplify right side
   1,826.50x = 2,516,789.15
5. Step 5: Solve for x
   x = 2,516,789.15/1,826.50
6. Step 6: Final answer
   x = 1,377.93