Finding the Fourth Proportional to 2,111.94, 3,166.38 and 1,000.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.94 : 3,166.38 = 1,000.74 : x
2. Step 2: Convert to fraction form
   2,111.94/3,166.38 = 1,000.74/x
3. Step 3: Cross multiply
   2,111.94x = 3,166.38 × 1,000.74
4. Step 4: Simplify right side
   2,111.94x = 3,168,723.12
5. Step 5: Solve for x
   x = 3,168,723.12/2,111.94
6. Step 6: Final answer
   x = 1,500.39