Finding the Fourth Proportional to 3,780.28, 5,668.34 and 1,314.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,780.28 : 5,668.34 = 1,314.90 : x
2. Step 2: Convert to fraction form
   3,780.28/5,668.34 = 1,314.90/x
3. Step 3: Cross multiply
   3,780.28x = 5,668.34 × 1,314.90
4. Step 4: Simplify right side
   3,780.28x = 7,453,300.27
5. Step 5: Solve for x
   x = 7,453,300.27/3,780.28
6. Step 6: Final answer
   x = 1,971.63