Finding the Fourth Proportional to 2,013.18, 2,779.38 and 1,267.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.18 : 2,779.38 = 1,267.78 : x
2. Step 2: Convert to fraction form
   2,013.18/2,779.38 = 1,267.78/x
3. Step 3: Cross multiply
   2,013.18x = 2,779.38 × 1,267.78
4. Step 4: Simplify right side
   2,013.18x = 3,523,642.38
5. Step 5: Solve for x
   x = 3,523,642.38/2,013.18
6. Step 6: Final answer
   x = 1,750.29