Finding the Fourth Proportional to 1,870.97, 2,581.49 and 1,207.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.97 : 2,581.49 = 1,207.69 : x
2. Step 2: Convert to fraction form
   1,870.97/2,581.49 = 1,207.69/x
3. Step 3: Cross multiply
   1,870.97x = 2,581.49 × 1,207.69
4. Step 4: Simplify right side
   1,870.97x = 3,117,636.22
5. Step 5: Solve for x
   x = 3,117,636.22/1,870.97
6. Step 6: Final answer
   x = 1,666.32