Finding the Fourth Proportional to 1,063.89, 1,594.76 and 577.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,063.89 : 1,594.76 = 577.35 : x
2. Step 2: Convert to fraction form
   1,063.89/1,594.76 = 577.35/x
3. Step 3: Cross multiply
   1,063.89x = 1,594.76 × 577.35
4. Step 4: Simplify right side
   1,063.89x = 920,731.80
5. Step 5: Solve for x
   x = 920,731.80/1,063.89
6. Step 6: Final answer
   x = 865.44