Finding the Fourth Proportional to 2,100.76, 3,151.61 and 802.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.76 : 3,151.61 = 802.24 : x
2. Step 2: Convert to fraction form
   2,100.76/3,151.61 = 802.24/x
3. Step 3: Cross multiply
   2,100.76x = 3,151.61 × 802.24
4. Step 4: Simplify right side
   2,100.76x = 2,528,347.61
5. Step 5: Solve for x
   x = 2,528,347.61/2,100.76
6. Step 6: Final answer
   x = 1,203.54