Finding the Fourth Proportional to 1,863.69, 2,792.31 and 1,131.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863.69 : 2,792.31 = 1,131.74 : x
2. Step 2: Convert to fraction form
   1,863.69/2,792.31 = 1,131.74/x
3. Step 3: Cross multiply
   1,863.69x = 2,792.31 × 1,131.74
4. Step 4: Simplify right side
   1,863.69x = 3,160,154.96
5. Step 5: Solve for x
   x = 3,160,154.96/1,863.69
6. Step 6: Final answer
   x = 1,695.64