Finding the Fourth Proportional to 1,770.80, 2,443.98 and 1,275.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,770.80 : 2,443.98 = 1,275.08 : x
2. Step 2: Convert to fraction form
   1,770.80/2,443.98 = 1,275.08/x
3. Step 3: Cross multiply
   1,770.80x = 2,443.98 × 1,275.08
4. Step 4: Simplify right side
   1,770.80x = 3,116,270.02
5. Step 5: Solve for x
   x = 3,116,270.02/1,770.80
6. Step 6: Final answer
   x = 1,759.81