Finding the Fourth Proportional to 1,369.32, 1,885.83 and 1,192.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.32 : 1,885.83 = 1,192.20 : x
2. Step 2: Convert to fraction form
   1,369.32/1,885.83 = 1,192.20/x
3. Step 3: Cross multiply
   1,369.32x = 1,885.83 × 1,192.20
4. Step 4: Simplify right side
   1,369.32x = 2,248,288.32
5. Step 5: Solve for x
   x = 2,248,288.32/1,369.32
6. Step 6: Final answer
   x = 1,641.90