Finding the Fourth Proportional to 1,560.34, 2,341.01 and 636.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560.34 : 2,341.01 = 636.72 : x
2. Step 2: Convert to fraction form
   1,560.34/2,341.01 = 636.72/x
3. Step 3: Cross multiply
   1,560.34x = 2,341.01 × 636.72
4. Step 4: Simplify right side
   1,560.34x = 1,490,567.89
5. Step 5: Solve for x
   x = 1,490,567.89/1,560.34
6. Step 6: Final answer
   x = 955.28