Finding the Fourth Proportional to 1,892.30, 2,612.05 and 1,369.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,892.30 : 2,612.05 = 1,369.85 : x
2. Step 2: Convert to fraction form
   1,892.30/2,612.05 = 1,369.85/x
3. Step 3: Cross multiply
   1,892.30x = 2,612.05 × 1,369.85
4. Step 4: Simplify right side
   1,892.30x = 3,578,100.21
5. Step 5: Solve for x
   x = 3,578,100.21/1,892.30
6. Step 6: Final answer
   x = 1,890.88