Finding the Fourth Proportional to 1,294.53, 1,762.56 and 1,290.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,294.53 : 1,762.56 = 1,290.43 : x
2. Step 2: Convert to fraction form
   1,294.53/1,762.56 = 1,290.43/x
3. Step 3: Cross multiply
   1,294.53x = 1,762.56 × 1,290.43
4. Step 4: Simplify right side
   1,294.53x = 2,274,460.30
5. Step 5: Solve for x
   x = 2,274,460.30/1,294.53
6. Step 6: Final answer
   x = 1,756.98