Finding the Fourth Proportional to 2,651.31, 3,977.34 and 802.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,651.31 : 3,977.34 = 802.17 : x
2. Step 2: Convert to fraction form
   2,651.31/3,977.34 = 802.17/x
3. Step 3: Cross multiply
   2,651.31x = 3,977.34 × 802.17
4. Step 4: Simplify right side
   2,651.31x = 3,190,502.83
5. Step 5: Solve for x
   x = 3,190,502.83/2,651.31
6. Step 6: Final answer
   x = 1,203.37