Finding the Fourth Proportional to 1,384.16, 1,907.94 and 1,089.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.16 : 1,907.94 = 1,089.04 : x
2. Step 2: Convert to fraction form
   1,384.16/1,907.94 = 1,089.04/x
3. Step 3: Cross multiply
   1,384.16x = 1,907.94 × 1,089.04
4. Step 4: Simplify right side
   1,384.16x = 2,077,822.98
5. Step 5: Solve for x
   x = 2,077,822.98/1,384.16
6. Step 6: Final answer
   x = 1,501.14