Finding the Fourth Proportional to 1,818.18, 2,507.10 and 1,227.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.18 : 2,507.10 = 1,227.69 : x
2. Step 2: Convert to fraction form
   1,818.18/2,507.10 = 1,227.69/x
3. Step 3: Cross multiply
   1,818.18x = 2,507.10 × 1,227.69
4. Step 4: Simplify right side
   1,818.18x = 3,077,943.90
5. Step 5: Solve for x
   x = 3,077,943.90/1,818.18
6. Step 6: Final answer
   x = 1,692.87