Finding the Fourth Proportional to 1,681.62, 2,320.69 and 925.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,681.62 : 2,320.69 = 925.43 : x
2. Step 2: Convert to fraction form
   1,681.62/2,320.69 = 925.43/x
3. Step 3: Cross multiply
   1,681.62x = 2,320.69 × 925.43
4. Step 4: Simplify right side
   1,681.62x = 2,147,619.92
5. Step 5: Solve for x
   x = 2,147,619.92/1,681.62
6. Step 6: Final answer
   x = 1,277.12