Finding the Fourth Proportional to 1,777.89, 2,666.81 and 803.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,777.89 : 2,666.81 = 803.31 : x
2. Step 2: Convert to fraction form
   1,777.89/2,666.81 = 803.31/x
3. Step 3: Cross multiply
   1,777.89x = 2,666.81 × 803.31
4. Step 4: Simplify right side
   1,777.89x = 2,142,275.14
5. Step 5: Solve for x
   x = 2,142,275.14/1,777.89
6. Step 6: Final answer
   x = 1,204.95