Finding the Fourth Proportional to 1,453.75, 2,181.59 and 684.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.75 : 2,181.59 = 684.31 : x
2. Step 2: Convert to fraction form
   1,453.75/2,181.59 = 684.31/x
3. Step 3: Cross multiply
   1,453.75x = 2,181.59 × 684.31
4. Step 4: Simplify right side
   1,453.75x = 1,492,883.85
5. Step 5: Solve for x
   x = 1,492,883.85/1,453.75
6. Step 6: Final answer
   x = 1,026.92