Finding the Fourth Proportional to 2,434.34, 3,359.52 and 1,386.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,434.34 : 3,359.52 = 1,386.40 : x
2. Step 2: Convert to fraction form
   2,434.34/3,359.52 = 1,386.40/x
3. Step 3: Cross multiply
   2,434.34x = 3,359.52 × 1,386.40
4. Step 4: Simplify right side
   2,434.34x = 4,657,638.53
5. Step 5: Solve for x
   x = 4,657,638.53/2,434.34
6. Step 6: Final answer
   x = 1,913.31