Finding the Fourth Proportional to 1,384.77, 1,908.96 and 1,089.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.77 : 1,908.96 = 1,089.53 : x
2. Step 2: Convert to fraction form
   1,384.77/1,908.96 = 1,089.53/x
3. Step 3: Cross multiply
   1,384.77x = 1,908.96 × 1,089.53
4. Step 4: Simplify right side
   1,384.77x = 2,079,859.64
5. Step 5: Solve for x
   x = 2,079,859.64/1,384.77
6. Step 6: Final answer
   x = 1,501.95