Finding the Fourth Proportional to 1,778.69, 2,453.60 and 1,248.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,778.69 : 2,453.60 = 1,248.37 : x
2. Step 2: Convert to fraction form
   1,778.69/2,453.60 = 1,248.37/x
3. Step 3: Cross multiply
   1,778.69x = 2,453.60 × 1,248.37
4. Step 4: Simplify right side
   1,778.69x = 3,063,000.63
5. Step 5: Solve for x
   x = 3,063,000.63/1,778.69
6. Step 6: Final answer
   x = 1,722.05