Finding the Fourth Proportional to 2,651.81, 3,977.78 and 802.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,651.81 : 3,977.78 = 802.98 : x
2. Step 2: Convert to fraction form
   2,651.81/3,977.78 = 802.98/x
3. Step 3: Cross multiply
   2,651.81x = 3,977.78 × 802.98
4. Step 4: Simplify right side
   2,651.81x = 3,194,073.77
5. Step 5: Solve for x
   x = 3,194,073.77/2,651.81
6. Step 6: Final answer
   x = 1,204.49