Finding the Fourth Proportional to 2,100.31, 3,148.63 and 802.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.31 : 3,148.63 = 802.69 : x
2. Step 2: Convert to fraction form
   2,100.31/3,148.63 = 802.69/x
3. Step 3: Cross multiply
   2,100.31x = 3,148.63 × 802.69
4. Step 4: Simplify right side
   2,100.31x = 2,527,363.94
5. Step 5: Solve for x
   x = 2,527,363.94/2,100.31
6. Step 6: Final answer
   x = 1,203.33