Finding the Fourth Proportional to 1,722.78, 2,373.75 and 1,511.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.78 : 2,373.75 = 1,511.34 : x
2. Step 2: Convert to fraction form
   1,722.78/2,373.75 = 1,511.34/x
3. Step 3: Cross multiply
   1,722.78x = 2,373.75 × 1,511.34
4. Step 4: Simplify right side
   1,722.78x = 3,587,543.33
5. Step 5: Solve for x
   x = 3,587,543.33/1,722.78
6. Step 6: Final answer
   x = 2,082.42