Finding the Fourth Proportional to 2,112.43, 2,915.33 and 1,403.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.43 : 2,915.33 = 1,403.02 : x
2. Step 2: Convert to fraction form
   2,112.43/2,915.33 = 1,403.02/x
3. Step 3: Cross multiply
   2,112.43x = 2,915.33 × 1,403.02
4. Step 4: Simplify right side
   2,112.43x = 4,090,266.30
5. Step 5: Solve for x
   x = 4,090,266.30/2,112.43
6. Step 6: Final answer
   x = 1,936.28