Finding the Fourth Proportional to 1,767.98, 2,440.50 and 1,178.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,767.98 : 2,440.50 = 1,178.30 : x
2. Step 2: Convert to fraction form
   1,767.98/2,440.50 = 1,178.30/x
3. Step 3: Cross multiply
   1,767.98x = 2,440.50 × 1,178.30
4. Step 4: Simplify right side
   1,767.98x = 2,875,642.83
5. Step 5: Solve for x
   x = 2,875,642.83/1,767.98
6. Step 6: Final answer
   x = 1,626.51