Finding the Fourth Proportional to 2,580.34, 3,870.69 and 1,119.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.34 : 3,870.69 = 1,119.58 : x
2. Step 2: Convert to fraction form
   2,580.34/3,870.69 = 1,119.58/x
3. Step 3: Cross multiply
   2,580.34x = 3,870.69 × 1,119.58
4. Step 4: Simplify right side
   2,580.34x = 4,333,547.11
5. Step 5: Solve for x
   x = 4,333,547.11/2,580.34
6. Step 6: Final answer
   x = 1,679.45