Finding the Fourth Proportional to 2,145.02, 3,216.56 and 846.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.02 : 3,216.56 = 846.18 : x
2. Step 2: Convert to fraction form
   2,145.02/3,216.56 = 846.18/x
3. Step 3: Cross multiply
   2,145.02x = 3,216.56 × 846.18
4. Step 4: Simplify right side
   2,145.02x = 2,721,784.51
5. Step 5: Solve for x
   x = 2,721,784.51/2,145.02
6. Step 6: Final answer
   x = 1,268.89