Finding the Fourth Proportional to 1,722.33, 2,380.32 and 1,302.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.33 : 2,380.32 = 1,302.55 : x
2. Step 2: Convert to fraction form
   1,722.33/2,380.32 = 1,302.55/x
3. Step 3: Cross multiply
   1,722.33x = 2,380.32 × 1,302.55
4. Step 4: Simplify right side
   1,722.33x = 3,100,488.79
5. Step 5: Solve for x
   x = 3,100,488.79/1,722.33
6. Step 6: Final answer
   x = 1,800.17