Finding the Fourth Proportional to 2,111.74, 3,165.50 and 999.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.74 : 3,165.50 = 999.17 : x
2. Step 2: Convert to fraction form
   2,111.74/3,165.50 = 999.17/x
3. Step 3: Cross multiply
   2,111.74x = 3,165.50 × 999.17
4. Step 4: Simplify right side
   2,111.74x = 3,162,874.43
5. Step 5: Solve for x
   x = 3,162,874.43/2,111.74
6. Step 6: Final answer
   x = 1,497.76