Finding the Fourth Proportional to 1,346.78, 1,858.34 and 849.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.78 : 1,858.34 = 849.69 : x
2. Step 2: Convert to fraction form
   1,346.78/1,858.34 = 849.69/x
3. Step 3: Cross multiply
   1,346.78x = 1,858.34 × 849.69
4. Step 4: Simplify right side
   1,346.78x = 1,579,015.04
5. Step 5: Solve for x
   x = 1,579,015.04/1,346.78
6. Step 6: Final answer
   x = 1,172.44