Finding the Fourth Proportional to 1,046.53, 1,444.23 and 580.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.53 : 1,444.23 = 580.78 : x
2. Step 2: Convert to fraction form
   1,046.53/1,444.23 = 580.78/x
3. Step 3: Cross multiply
   1,046.53x = 1,444.23 × 580.78
4. Step 4: Simplify right side
   1,046.53x = 838,783.51
5. Step 5: Solve for x
   x = 838,783.51/1,046.53
6. Step 6: Final answer
   x = 801.49