Finding the Fourth Proportional to 1,405.37, 1,938.95 and 846.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,405.37 : 1,938.95 = 846.05 : x
2. Step 2: Convert to fraction form
   1,405.37/1,938.95 = 846.05/x
3. Step 3: Cross multiply
   1,405.37x = 1,938.95 × 846.05
4. Step 4: Simplify right side
   1,405.37x = 1,640,434.72
5. Step 5: Solve for x
   x = 1,640,434.72/1,405.37
6. Step 6: Final answer
   x = 1,167.27