Finding the Fourth Proportional to 2,869.61, 4,298.29 and 1,386.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,869.61 : 4,298.29 = 1,386.59 : x
2. Step 2: Convert to fraction form
   2,869.61/4,298.29 = 1,386.59/x
3. Step 3: Cross multiply
   2,869.61x = 4,298.29 × 1,386.59
4. Step 4: Simplify right side
   2,869.61x = 5,959,940.97
5. Step 5: Solve for x
   x = 5,959,940.97/2,869.61
6. Step 6: Final answer
   x = 2,076.92