Finding the Fourth Proportional to 1,144.33, 1,579.28 and 647.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.33 : 1,579.28 = 647.06 : x
2. Step 2: Convert to fraction form
   1,144.33/1,579.28 = 647.06/x
3. Step 3: Cross multiply
   1,144.33x = 1,579.28 × 647.06
4. Step 4: Simplify right side
   1,144.33x = 1,021,883.71
5. Step 5: Solve for x
   x = 1,021,883.71/1,144.33
6. Step 6: Final answer
   x = 893.00