Finding the Fourth Proportional to 2,435.31, 3,360.74 and 1,387.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,435.31 : 3,360.74 = 1,387.38 : x
2. Step 2: Convert to fraction form
   2,435.31/3,360.74 = 1,387.38/x
3. Step 3: Cross multiply
   2,435.31x = 3,360.74 × 1,387.38
4. Step 4: Simplify right side
   2,435.31x = 4,662,623.46
5. Step 5: Solve for x
   x = 4,662,623.46/2,435.31
6. Step 6: Final answer
   x = 1,914.59