Finding the Fourth Proportional to 1,798.61, 2,698.72 and 759.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,798.61 : 2,698.72 = 759.38 : x
2. Step 2: Convert to fraction form
   1,798.61/2,698.72 = 759.38/x
3. Step 3: Cross multiply
   1,798.61x = 2,698.72 × 759.38
4. Step 4: Simplify right side
   1,798.61x = 2,049,338.60
5. Step 5: Solve for x
   x = 2,049,338.60/1,798.61
6. Step 6: Final answer
   x = 1,139.40