Finding the Fourth Proportional to 1,761.04, 2,639.76 and 1,145.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,761.04 : 2,639.76 = 1,145.98 : x
2. Step 2: Convert to fraction form
   1,761.04/2,639.76 = 1,145.98/x
3. Step 3: Cross multiply
   1,761.04x = 2,639.76 × 1,145.98
4. Step 4: Simplify right side
   1,761.04x = 3,025,112.16
5. Step 5: Solve for x
   x = 3,025,112.16/1,761.04
6. Step 6: Final answer
   x = 1,717.80