Finding the Fourth Proportional to 2,502.72, 3,453.48 and 1,383.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,502.72 : 3,453.48 = 1,383.72 : x
2. Step 2: Convert to fraction form
   2,502.72/3,453.48 = 1,383.72/x
3. Step 3: Cross multiply
   2,502.72x = 3,453.48 × 1,383.72
4. Step 4: Simplify right side
   2,502.72x = 4,778,649.35
5. Step 5: Solve for x
   x = 4,778,649.35/2,502.72
6. Step 6: Final answer
   x = 1,909.38