Finding the Fourth Proportional to 1,719.50, 2,580.12 and 745.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,719.50 : 2,580.12 = 745.61 : x
2. Step 2: Convert to fraction form
   1,719.50/2,580.12 = 745.61/x
3. Step 3: Cross multiply
   1,719.50x = 2,580.12 × 745.61
4. Step 4: Simplify right side
   1,719.50x = 1,923,750.37
5. Step 5: Solve for x
   x = 1,923,750.37/1,719.50
6. Step 6: Final answer
   x = 1,118.79