Finding the Fourth Proportional to 2,042, 3,061.68 and 872.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042 : 3,061.68 = 872.76 : x
2. Step 2: Convert to fraction form
   2,042/3,061.68 = 872.76/x
3. Step 3: Cross multiply
   2,042x = 3,061.68 × 872.76
4. Step 4: Simplify right side
   2,042x = 2,672,111.84
5. Step 5: Solve for x
   x = 2,672,111.84/2,042
6. Step 6: Final answer
   x = 1,308.58