Finding the Fourth Proportional to 1,722.83, 2,580.71 and 1,284.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.83 : 2,580.71 = 1,284.53 : x
2. Step 2: Convert to fraction form
   1,722.83/2,580.71 = 1,284.53/x
3. Step 3: Cross multiply
   1,722.83x = 2,580.71 × 1,284.53
4. Step 4: Simplify right side
   1,722.83x = 3,314,980.09
5. Step 5: Solve for x
   x = 3,314,980.09/1,722.83
6. Step 6: Final answer
   x = 1,924.15