Finding the Fourth Proportional to 3,878.00, 5,349.47 and 2,385.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,878.00 : 5,349.47 = 2,385.62 : x
2. Step 2: Convert to fraction form
   3,878.00/5,349.47 = 2,385.62/x
3. Step 3: Cross multiply
   3,878.00x = 5,349.47 × 2,385.62
4. Step 4: Simplify right side
   3,878.00x = 12,761,814.10
5. Step 5: Solve for x
   x = 12,761,814.10/3,878.00
6. Step 6: Final answer
   x = 3,290.82