Finding the Fourth Proportional to 1,144.30, 1,580.97 and 1,056.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.30 : 1,580.97 = 1,056.82 : x
2. Step 2: Convert to fraction form
   1,144.30/1,580.97 = 1,056.82/x
3. Step 3: Cross multiply
   1,144.30x = 1,580.97 × 1,056.82
4. Step 4: Simplify right side
   1,144.30x = 1,670,800.72
5. Step 5: Solve for x
   x = 1,670,800.72/1,144.30
6. Step 6: Final answer
   x = 1,460.11