Finding the Fourth Proportional to 1,681.69, 2,320.59 and 973.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,681.69 : 2,320.59 = 973.39 : x
2. Step 2: Convert to fraction form
   1,681.69/2,320.59 = 973.39/x
3. Step 3: Cross multiply
   1,681.69x = 2,320.59 × 973.39
4. Step 4: Simplify right side
   1,681.69x = 2,258,839.10
5. Step 5: Solve for x
   x = 2,258,839.10/1,681.69
6. Step 6: Final answer
   x = 1,343.20