Finding the Fourth Proportional to 1,292.91, 1,784.24 and 761.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,292.91 : 1,784.24 = 761.82 : x
2. Step 2: Convert to fraction form
   1,292.91/1,784.24 = 761.82/x
3. Step 3: Cross multiply
   1,292.91x = 1,784.24 × 761.82
4. Step 4: Simplify right side
   1,292.91x = 1,359,269.72
5. Step 5: Solve for x
   x = 1,359,269.72/1,292.91
6. Step 6: Final answer
   x = 1,051.33