Finding the Fourth Proportional to 1,233.44, 1,847.72 and 647.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,233.44 : 1,847.72 = 647.56 : x
2. Step 2: Convert to fraction form
   1,233.44/1,847.72 = 647.56/x
3. Step 3: Cross multiply
   1,233.44x = 1,847.72 × 647.56
4. Step 4: Simplify right side
   1,233.44x = 1,196,506.33
5. Step 5: Solve for x
   x = 1,196,506.33/1,233.44
6. Step 6: Final answer
   x = 970.06