Finding the Fourth Proportional to 3,914.10, 5,402.05 and 2,235.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.10 : 5,402.05 = 2,235.86 : x
2. Step 2: Convert to fraction form
   3,914.10/5,402.05 = 2,235.86/x
3. Step 3: Cross multiply
   3,914.10x = 5,402.05 × 2,235.86
4. Step 4: Simplify right side
   3,914.10x = 12,078,227.51
5. Step 5: Solve for x
   x = 12,078,227.51/3,914.10
6. Step 6: Final answer
   x = 3,085.82