Finding the Fourth Proportional to 1,593.02, 2,390.89 and 771.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,593.02 : 2,390.89 = 771.90 : x
2. Step 2: Convert to fraction form
   1,593.02/2,390.89 = 771.90/x
3. Step 3: Cross multiply
   1,593.02x = 2,390.89 × 771.90
4. Step 4: Simplify right side
   1,593.02x = 1,845,540.89
5. Step 5: Solve for x
   x = 1,845,540.89/1,593.02
6. Step 6: Final answer
   x = 1,158.52