Finding the Fourth Proportional to 2,280.71, 3,147.60 and 1,384.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.71 : 3,147.60 = 1,384.38 : x
2. Step 2: Convert to fraction form
   2,280.71/3,147.60 = 1,384.38/x
3. Step 3: Cross multiply
   2,280.71x = 3,147.60 × 1,384.38
4. Step 4: Simplify right side
   2,280.71x = 4,357,471.81
5. Step 5: Solve for x
   x = 4,357,471.81/2,280.71
6. Step 6: Final answer
   x = 1,910.58