Finding the Fourth Proportional to 2,100.26, 3,151.30 and 802.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.26 : 3,151.30 = 802.10 : x
2. Step 2: Convert to fraction form
   2,100.26/3,151.30 = 802.10/x
3. Step 3: Cross multiply
   2,100.26x = 3,151.30 × 802.10
4. Step 4: Simplify right side
   2,100.26x = 2,527,657.73
5. Step 5: Solve for x
   x = 2,527,657.73/2,100.26
6. Step 6: Final answer
   x = 1,203.50