Finding the Fourth Proportional to 2,042.61, 3,061.81 and 792.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.61 : 3,061.81 = 792.88 : x
2. Step 2: Convert to fraction form
   2,042.61/3,061.81 = 792.88/x
3. Step 3: Cross multiply
   2,042.61x = 3,061.81 × 792.88
4. Step 4: Simplify right side
   2,042.61x = 2,427,638.28
5. Step 5: Solve for x
   x = 2,427,638.28/2,042.61
6. Step 6: Final answer
   x = 1,188.50