Finding the Fourth Proportional to 2,111.38, 3,165.16 and 1,000.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.38 : 3,165.16 = 1,000.10 : x
2. Step 2: Convert to fraction form
   2,111.38/3,165.16 = 1,000.10/x
3. Step 3: Cross multiply
   2,111.38x = 3,165.16 × 1,000.10
4. Step 4: Simplify right side
   2,111.38x = 3,165,491.07
5. Step 5: Solve for x
   x = 3,165,491.07/2,111.38
6. Step 6: Final answer
   x = 1,499.25