Finding the Fourth Proportional to 1,664.74, 2,297.55 and 1,384.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.74 : 2,297.55 = 1,384.49 : x
2. Step 2: Convert to fraction form
   1,664.74/2,297.55 = 1,384.49/x
3. Step 3: Cross multiply
   1,664.74x = 2,297.55 × 1,384.49
4. Step 4: Simplify right side
   1,664.74x = 3,180,916.59
5. Step 5: Solve for x
   x = 3,180,916.59/1,664.74
6. Step 6: Final answer
   x = 1,910.76