Finding the Fourth Proportional to 1,680.98, 2,522.34 and 802.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680.98 : 2,522.34 = 802.91 : x
2. Step 2: Convert to fraction form
   1,680.98/2,522.34 = 802.91/x
3. Step 3: Cross multiply
   1,680.98x = 2,522.34 × 802.91
4. Step 4: Simplify right side
   1,680.98x = 2,025,218.32
5. Step 5: Solve for x
   x = 2,025,218.32/1,680.98
6. Step 6: Final answer
   x = 1,204.79