Finding the Fourth Proportional to 1,870.10, 2,580.17 and 1,083.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.10 : 2,580.17 = 1,083.99 : x
2. Step 2: Convert to fraction form
   1,870.10/2,580.17 = 1,083.99/x
3. Step 3: Cross multiply
   1,870.10x = 2,580.17 × 1,083.99
4. Step 4: Simplify right side
   1,870.10x = 2,796,873.06
5. Step 5: Solve for x
   x = 2,796,873.06/1,870.10
6. Step 6: Final answer
   x = 1,495.58