Finding the Fourth Proportional to 1,672.90, 2,308.06 and 974.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.90 : 2,308.06 = 974.14 : x
2. Step 2: Convert to fraction form
   1,672.90/2,308.06 = 974.14/x
3. Step 3: Cross multiply
   1,672.90x = 2,308.06 × 974.14
4. Step 4: Simplify right side
   1,672.90x = 2,248,373.57
5. Step 5: Solve for x
   x = 2,248,373.57/1,672.90
6. Step 6: Final answer
   x = 1,344.00