Finding the Fourth Proportional to 1,913.29, 2,640.71 and 1,116.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,913.29 : 2,640.71 = 1,116.71 : x
2. Step 2: Convert to fraction form
   1,913.29/2,640.71 = 1,116.71/x
3. Step 3: Cross multiply
   1,913.29x = 2,640.71 × 1,116.71
4. Step 4: Simplify right side
   1,913.29x = 2,948,907.26
5. Step 5: Solve for x
   x = 2,948,907.26/1,913.29
6. Step 6: Final answer
   x = 1,541.28