Finding the Fourth Proportional to 2,380.17, 3,569.49 and 992.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.17 : 3,569.49 = 992.76 : x
2. Step 2: Convert to fraction form
   2,380.17/3,569.49 = 992.76/x
3. Step 3: Cross multiply
   2,380.17x = 3,569.49 × 992.76
4. Step 4: Simplify right side
   2,380.17x = 3,543,646.89
5. Step 5: Solve for x
   x = 3,543,646.89/2,380.17
6. Step 6: Final answer
   x = 1,488.82