Finding the Fourth Proportional to 2,402.34, 3,316.58 and 1,563.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.34 : 3,316.58 = 1,563.78 : x
2. Step 2: Convert to fraction form
   2,402.34/3,316.58 = 1,563.78/x
3. Step 3: Cross multiply
   2,402.34x = 3,316.58 × 1,563.78
4. Step 4: Simplify right side
   2,402.34x = 5,186,401.47
5. Step 5: Solve for x
   x = 5,186,401.47/2,402.34
6. Step 6: Final answer
   x = 2,158.90