Finding the Fourth Proportional to 1,754.42, 2,633.28 and 1,290.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,754.42 : 2,633.28 = 1,290.78 : x
2. Step 2: Convert to fraction form
   1,754.42/2,633.28 = 1,290.78/x
3. Step 3: Cross multiply
   1,754.42x = 2,633.28 × 1,290.78
4. Step 4: Simplify right side
   1,754.42x = 3,398,985.16
5. Step 5: Solve for x
   x = 3,398,985.16/1,754.42
6. Step 6: Final answer
   x = 1,937.38