Finding the Fourth Proportional to 2,688.24, 4,030.88 and 1,810.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,688.24 : 4,030.88 = 1,810.72 : x
2. Step 2: Convert to fraction form
   2,688.24/4,030.88 = 1,810.72/x
3. Step 3: Cross multiply
   2,688.24x = 4,030.88 × 1,810.72
4. Step 4: Simplify right side
   2,688.24x = 7,298,795.03
5. Step 5: Solve for x
   x = 7,298,795.03/2,688.24
6. Step 6: Final answer
   x = 2,715.08