Finding the Fourth Proportional to 1,776.72, 2,666.51 and 802.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776.72 : 2,666.51 = 802.91 : x
2. Step 2: Convert to fraction form
   1,776.72/2,666.51 = 802.91/x
3. Step 3: Cross multiply
   1,776.72x = 2,666.51 × 802.91
4. Step 4: Simplify right side
   1,776.72x = 2,140,950.20
5. Step 5: Solve for x
   x = 2,140,950.20/1,776.72
6. Step 6: Final answer
   x = 1,205.00