Finding the Fourth Proportional to 2,095.59, 3,139.88 and 1,478.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.59 : 3,139.88 = 1,478.28 : x
2. Step 2: Convert to fraction form
   2,095.59/3,139.88 = 1,478.28/x
3. Step 3: Cross multiply
   2,095.59x = 3,139.88 × 1,478.28
4. Step 4: Simplify right side
   2,095.59x = 4,641,611.13
5. Step 5: Solve for x
   x = 4,641,611.13/2,095.59
6. Step 6: Final answer
   x = 2,214.94