Finding the Fourth Proportional to 2,402.28, 3,315.36 and 1,354.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.28 : 3,315.36 = 1,354.55 : x
2. Step 2: Convert to fraction form
   2,402.28/3,315.36 = 1,354.55/x
3. Step 3: Cross multiply
   2,402.28x = 3,315.36 × 1,354.55
4. Step 4: Simplify right side
   2,402.28x = 4,490,820.89
5. Step 5: Solve for x
   x = 4,490,820.89/2,402.28
6. Step 6: Final answer
   x = 1,869.40