Finding the Fourth Proportional to 1,799.78, 2,700.11 and 759.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,799.78 : 2,700.11 = 759.22 : x
2. Step 2: Convert to fraction form
   1,799.78/2,700.11 = 759.22/x
3. Step 3: Cross multiply
   1,799.78x = 2,700.11 × 759.22
4. Step 4: Simplify right side
   1,799.78x = 2,049,973.72
5. Step 5: Solve for x
   x = 2,049,973.72/1,799.78
6. Step 6: Final answer
   x = 1,139.02