Finding the Fourth Proportional to 1,384.65, 1,906.41 and 1,174.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.65 : 1,906.41 = 1,174.35 : x
2. Step 2: Convert to fraction form
   1,384.65/1,906.41 = 1,174.35/x
3. Step 3: Cross multiply
   1,384.65x = 1,906.41 × 1,174.35
4. Step 4: Simplify right side
   1,384.65x = 2,238,792.58
5. Step 5: Solve for x
   x = 2,238,792.58/1,384.65
6. Step 6: Final answer
   x = 1,616.87