Finding the Fourth Proportional to 1,817.55, 2,722.28 and 1,817.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,817.55 : 2,722.28 = 1,817.55 : x
2. Step 2: Convert to fraction form
   1,817.55/2,722.28 = 1,817.55/x
3. Step 3: Cross multiply
   1,817.55x = 2,722.28 × 1,817.55
4. Step 4: Simplify right side
   1,817.55x = 4,947,870.93
5. Step 5: Solve for x
   x = 4,947,870.93/1,817.55
6. Step 6: Final answer
   x = 2,722.28