Finding the Fourth Proportional to 2,085.12, 3,124.57 and 1,900.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.12 : 3,124.57 = 1,900.71 : x
2. Step 2: Convert to fraction form
   2,085.12/3,124.57 = 1,900.71/x
3. Step 3: Cross multiply
   2,085.12x = 3,124.57 × 1,900.71
4. Step 4: Simplify right side
   2,085.12x = 5,938,901.44
5. Step 5: Solve for x
   x = 5,938,901.44/2,085.12
6. Step 6: Final answer
   x = 2,848.23