Finding the Fourth Proportional to 5,185.48, 7,778.88 and 1,897.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,185.48 : 7,778.88 = 1,897.72 : x
2. Step 2: Convert to fraction form
   5,185.48/7,778.88 = 1,897.72/x
3. Step 3: Cross multiply
   5,185.48x = 7,778.88 × 1,897.72
4. Step 4: Simplify right side
   5,185.48x = 14,762,136.15
5. Step 5: Solve for x
   x = 14,762,136.15/5,185.48
6. Step 6: Final answer
   x = 2,846.82