Finding the Fourth Proportional to 1,056.83, 1,458.41 and 591.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.83 : 1,458.41 = 591.08 : x
2. Step 2: Convert to fraction form
   1,056.83/1,458.41 = 591.08/x
3. Step 3: Cross multiply
   1,056.83x = 1,458.41 × 591.08
4. Step 4: Simplify right side
   1,056.83x = 862,036.98
5. Step 5: Solve for x
   x = 862,036.98/1,056.83
6. Step 6: Final answer
   x = 815.68