Finding the Fourth Proportional to 1,911.18, 2,635.83 and 1,247.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,911.18 : 2,635.83 = 1,247.52 : x
2. Step 2: Convert to fraction form
   1,911.18/2,635.83 = 1,247.52/x
3. Step 3: Cross multiply
   1,911.18x = 2,635.83 × 1,247.52
4. Step 4: Simplify right side
   1,911.18x = 3,288,250.64
5. Step 5: Solve for x
   x = 3,288,250.64/1,911.18
6. Step 6: Final answer
   x = 1,720.53