Finding the Fourth Proportional to 1,836.30, 2,755.80 and 1,143.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,836.30 : 2,755.80 = 1,143.98 : x
2. Step 2: Convert to fraction form
   1,836.30/2,755.80 = 1,143.98/x
3. Step 3: Cross multiply
   1,836.30x = 2,755.80 × 1,143.98
4. Step 4: Simplify right side
   1,836.30x = 3,152,566.31
5. Step 5: Solve for x
   x = 3,152,566.31/1,836.30
6. Step 6: Final answer
   x = 1,716.80