Finding the Fourth Proportional to 2,287.49, 3,430.60 and 1,116.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.49 : 3,430.60 = 1,116.86 : x
2. Step 2: Convert to fraction form
   2,287.49/3,430.60 = 1,116.86/x
3. Step 3: Cross multiply
   2,287.49x = 3,430.60 × 1,116.86
4. Step 4: Simplify right side
   2,287.49x = 3,831,499.92
5. Step 5: Solve for x
   x = 3,831,499.92/2,287.49
6. Step 6: Final answer
   x = 1,674.98