Finding the Fourth Proportional to 1,369.80, 1,889.71 and 846.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.80 : 1,889.71 = 846.13 : x
2. Step 2: Convert to fraction form
   1,369.80/1,889.71 = 846.13/x
3. Step 3: Cross multiply
   1,369.80x = 1,889.71 × 846.13
4. Step 4: Simplify right side
   1,369.80x = 1,598,940.32
5. Step 5: Solve for x
   x = 1,598,940.32/1,369.80
6. Step 6: Final answer
   x = 1,167.28