Finding the Fourth Proportional to 1,870.17, 2,580.69 and 1,084.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.17 : 2,580.69 = 1,084.20 : x
2. Step 2: Convert to fraction form
   1,870.17/2,580.69 = 1,084.20/x
3. Step 3: Cross multiply
   1,870.17x = 2,580.69 × 1,084.20
4. Step 4: Simplify right side
   1,870.17x = 2,797,984.10
5. Step 5: Solve for x
   x = 2,797,984.10/1,870.17
6. Step 6: Final answer
   x = 1,496.11