Finding the Fourth Proportional to 1,144.95, 1,579.83 and 647.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.95 : 1,579.83 = 647.52 : x
2. Step 2: Convert to fraction form
   1,144.95/1,579.83 = 647.52/x
3. Step 3: Cross multiply
   1,144.95x = 1,579.83 × 647.52
4. Step 4: Simplify right side
   1,144.95x = 1,022,971.52
5. Step 5: Solve for x
   x = 1,022,971.52/1,144.95
6. Step 6: Final answer
   x = 893.46