Finding the Fourth Proportional to 2,818.07, 3,890.29 and 1,875.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.07 : 3,890.29 = 1,875.43 : x
2. Step 2: Convert to fraction form
   2,818.07/3,890.29 = 1,875.43/x
3. Step 3: Cross multiply
   2,818.07x = 3,890.29 × 1,875.43
4. Step 4: Simplify right side
   2,818.07x = 7,295,966.57
5. Step 5: Solve for x
   x = 7,295,966.57/2,818.07
6. Step 6: Final answer
   x = 2,588.99