Finding the Fourth Proportional to 1,422.42, 2,135.25 and 846.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.42 : 2,135.25 = 846.51 : x
2. Step 2: Convert to fraction form
   1,422.42/2,135.25 = 846.51/x
3. Step 3: Cross multiply
   1,422.42x = 2,135.25 × 846.51
4. Step 4: Simplify right side
   1,422.42x = 1,807,510.48
5. Step 5: Solve for x
   x = 1,807,510.48/1,422.42
6. Step 6: Final answer
   x = 1,270.73