Finding the Fourth Proportional to 1,719.20, 2,577.93 and 744.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,719.20 : 2,577.93 = 744.86 : x
2. Step 2: Convert to fraction form
   1,719.20/2,577.93 = 744.86/x
3. Step 3: Cross multiply
   1,719.20x = 2,577.93 × 744.86
4. Step 4: Simplify right side
   1,719.20x = 1,920,196.94
5. Step 5: Solve for x
   x = 1,920,196.94/1,719.20
6. Step 6: Final answer
   x = 1,116.91