Finding the Fourth Proportional to 1,877.56, 2,814.72 and 722.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,877.56 : 2,814.72 = 722.50 : x
2. Step 2: Convert to fraction form
   1,877.56/2,814.72 = 722.50/x
3. Step 3: Cross multiply
   1,877.56x = 2,814.72 × 722.50
4. Step 4: Simplify right side
   1,877.56x = 2,033,635.20
5. Step 5: Solve for x
   x = 2,033,635.20/1,877.56
6. Step 6: Final answer
   x = 1,083.13