Finding the Fourth Proportional to 2,779.61, 4,167.32 and 1,683.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,779.61 : 4,167.32 = 1,683.69 : x
2. Step 2: Convert to fraction form
   2,779.61/4,167.32 = 1,683.69/x
3. Step 3: Cross multiply
   2,779.61x = 4,167.32 × 1,683.69
4. Step 4: Simplify right side
   2,779.61x = 7,016,466.59
5. Step 5: Solve for x
   x = 7,016,466.59/2,779.61
6. Step 6: Final answer
   x = 2,524.27