Finding the Fourth Proportional to 1,064.06, 1,596.69 and 577.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.06 : 1,596.69 = 577.15 : x
2. Step 2: Convert to fraction form
   1,064.06/1,596.69 = 577.15/x
3. Step 3: Cross multiply
   1,064.06x = 1,596.69 × 577.15
4. Step 4: Simplify right side
   1,064.06x = 921,529.63
5. Step 5: Solve for x
   x = 921,529.63/1,064.06
6. Step 6: Final answer
   x = 866.05