Finding the Fourth Proportional to 1,755.98, 2,633.98 and 1,390.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,755.98 : 2,633.98 = 1,390.28 : x
2. Step 2: Convert to fraction form
   1,755.98/2,633.98 = 1,390.28/x
3. Step 3: Cross multiply
   1,755.98x = 2,633.98 × 1,390.28
4. Step 4: Simplify right side
   1,755.98x = 3,661,969.71
5. Step 5: Solve for x
   x = 3,661,969.71/1,755.98
6. Step 6: Final answer
   x = 2,085.43