Finding the Fourth Proportional to 1,761.48, 2,428.52 and 1,289.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,761.48 : 2,428.52 = 1,289.52 : x
2. Step 2: Convert to fraction form
   1,761.48/2,428.52 = 1,289.52/x
3. Step 3: Cross multiply
   1,761.48x = 2,428.52 × 1,289.52
4. Step 4: Simplify right side
   1,761.48x = 3,131,618.66
5. Step 5: Solve for x
   x = 3,131,618.66/1,761.48
6. Step 6: Final answer
   x = 1,777.83