Finding the Fourth Proportional to 2,595.74, 3,887.89 and 2,145.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,595.74 : 3,887.89 = 2,145.90 : x
2. Step 2: Convert to fraction form
   2,595.74/3,887.89 = 2,145.90/x
3. Step 3: Cross multiply
   2,595.74x = 3,887.89 × 2,145.90
4. Step 4: Simplify right side
   2,595.74x = 8,343,023.15
5. Step 5: Solve for x
   x = 8,343,023.15/2,595.74
6. Step 6: Final answer
   x = 3,214.12