Finding the Fourth Proportional to 1,558.09, 2,333.91 and 775.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.09 : 2,333.91 = 775.73 : x
2. Step 2: Convert to fraction form
   1,558.09/2,333.91 = 775.73/x
3. Step 3: Cross multiply
   1,558.09x = 2,333.91 × 775.73
4. Step 4: Simplify right side
   1,558.09x = 1,810,492.75
5. Step 5: Solve for x
   x = 1,810,492.75/1,558.09
6. Step 6: Final answer
   x = 1,161.99