Finding the Fourth Proportional to 2,434.74, 3,360.16 and 1,386.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,434.74 : 3,360.16 = 1,386.86 : x
2. Step 2: Convert to fraction form
   2,434.74/3,360.16 = 1,386.86/x
3. Step 3: Cross multiply
   2,434.74x = 3,360.16 × 1,386.86
4. Step 4: Simplify right side
   2,434.74x = 4,660,071.50
5. Step 5: Solve for x
   x = 4,660,071.50/2,434.74
6. Step 6: Final answer
   x = 1,913.99