Finding the Fourth Proportional to 2,145.37, 3,219.06 and 759.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.37 : 3,219.06 = 759.75 : x
2. Step 2: Convert to fraction form
   2,145.37/3,219.06 = 759.75/x
3. Step 3: Cross multiply
   2,145.37x = 3,219.06 × 759.75
4. Step 4: Simplify right side
   2,145.37x = 2,445,677.04
5. Step 5: Solve for x
   x = 2,445,677.04/2,145.37
6. Step 6: Final answer
   x = 1,139.98