Finding the Fourth Proportional to 2,100.37, 3,148.49 and 783.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.37 : 3,148.49 = 783.15 : x
2. Step 2: Convert to fraction form
   2,100.37/3,148.49 = 783.15/x
3. Step 3: Cross multiply
   2,100.37x = 3,148.49 × 783.15
4. Step 4: Simplify right side
   2,100.37x = 2,465,739.94
5. Step 5: Solve for x
   x = 2,465,739.94/2,100.37
6. Step 6: Final answer
   x = 1,173.96