Finding the Fourth Proportional to 2,435.91, 3,360.73 and 1,387.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,435.91 : 3,360.73 = 1,387.23 : x
2. Step 2: Convert to fraction form
   2,435.91/3,360.73 = 1,387.23/x
3. Step 3: Cross multiply
   2,435.91x = 3,360.73 × 1,387.23
4. Step 4: Simplify right side
   2,435.91x = 4,662,105.48
5. Step 5: Solve for x
   x = 4,662,105.48/2,435.91
6. Step 6: Final answer
   x = 1,913.91