Finding the Fourth Proportional to 1,520.89, 2,098.78 and 848.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.89 : 2,098.78 = 848.71 : x
2. Step 2: Convert to fraction form
   1,520.89/2,098.78 = 848.71/x
3. Step 3: Cross multiply
   1,520.89x = 2,098.78 × 848.71
4. Step 4: Simplify right side
   1,520.89x = 1,781,257.67
5. Step 5: Solve for x
   x = 1,781,257.67/1,520.89
6. Step 6: Final answer
   x = 1,171.19