Finding the Fourth Proportional to 3,780.22, 5,672.92 and 1,315.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,780.22 : 5,672.92 = 1,315.04 : x
2. Step 2: Convert to fraction form
   3,780.22/5,672.92 = 1,315.04/x
3. Step 3: Cross multiply
   3,780.22x = 5,672.92 × 1,315.04
4. Step 4: Simplify right side
   3,780.22x = 7,460,116.72
5. Step 5: Solve for x
   x = 7,460,116.72/3,780.22
6. Step 6: Final answer
   x = 1,973.46