Finding the Fourth Proportional to 1,756.42, 2,635.55 and 1,139.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,756.42 : 2,635.55 = 1,139.98 : x
2. Step 2: Convert to fraction form
   1,756.42/2,635.55 = 1,139.98/x
3. Step 3: Cross multiply
   1,756.42x = 2,635.55 × 1,139.98
4. Step 4: Simplify right side
   1,756.42x = 3,004,474.29
5. Step 5: Solve for x
   x = 3,004,474.29/1,756.42
6. Step 6: Final answer
   x = 1,710.57