Finding the Fourth Proportional to 3,870.42, 5,341.86 and 2,191.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.42 : 5,341.86 = 2,191.92 : x
2. Step 2: Convert to fraction form
   3,870.42/5,341.86 = 2,191.92/x
3. Step 3: Cross multiply
   3,870.42x = 5,341.86 × 2,191.92
4. Step 4: Simplify right side
   3,870.42x = 11,708,929.77
5. Step 5: Solve for x
   x = 11,708,929.77/3,870.42
6. Step 6: Final answer
   x = 3,025.23