Finding the Fourth Proportional to 2,100.57, 3,147.21 and 1,874.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.57 : 3,147.21 = 1,874.58 : x
2. Step 2: Convert to fraction form
   2,100.57/3,147.21 = 1,874.58/x
3. Step 3: Cross multiply
   2,100.57x = 3,147.21 × 1,874.58
4. Step 4: Simplify right side
   2,100.57x = 5,899,696.92
5. Step 5: Solve for x
   x = 5,899,696.92/2,100.57
6. Step 6: Final answer
   x = 2,808.62