Finding the Fourth Proportional to 1,817.86, 2,725.35 and 722.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,817.86 : 2,725.35 = 722.50 : x
2. Step 2: Convert to fraction form
   1,817.86/2,725.35 = 722.50/x
3. Step 3: Cross multiply
   1,817.86x = 2,725.35 × 722.50
4. Step 4: Simplify right side
   1,817.86x = 1,969,065.38
5. Step 5: Solve for x
   x = 1,969,065.38/1,817.86
6. Step 6: Final answer
   x = 1,083.18