Finding the Fourth Proportional to 1,083.30, 1,495.18 and 684.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.30 : 1,495.18 = 684.71 : x
2. Step 2: Convert to fraction form
   1,083.30/1,495.18 = 684.71/x
3. Step 3: Cross multiply
   1,083.30x = 1,495.18 × 684.71
4. Step 4: Simplify right side
   1,083.30x = 1,023,763.51
5. Step 5: Solve for x
   x = 1,023,763.51/1,083.30
6. Step 6: Final answer
   x = 945.04