Finding the Fourth Proportional to 1,855.72, 2,783.60 and 759.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,855.72 : 2,783.60 = 759.32 : x
2. Step 2: Convert to fraction form
   1,855.72/2,783.60 = 759.32/x
3. Step 3: Cross multiply
   1,855.72x = 2,783.60 × 759.32
4. Step 4: Simplify right side
   1,855.72x = 2,113,643.15
5. Step 5: Solve for x
   x = 2,113,643.15/1,855.72
6. Step 6: Final answer
   x = 1,138.99