Finding the Fourth Proportional to 1,043.34, 1,439.84 and 577.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,043.34 : 1,439.84 = 577.59 : x
2. Step 2: Convert to fraction form
   1,043.34/1,439.84 = 577.59/x
3. Step 3: Cross multiply
   1,043.34x = 1,439.84 × 577.59
4. Step 4: Simplify right side
   1,043.34x = 831,634.30
5. Step 5: Solve for x
   x = 831,634.30/1,043.34
6. Step 6: Final answer
   x = 797.09