Finding the Fourth Proportional to 2,162.55, 3,242.43 and 846.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.55 : 3,242.43 = 846.30 : x
2. Step 2: Convert to fraction form
   2,162.55/3,242.43 = 846.30/x
3. Step 3: Cross multiply
   2,162.55x = 3,242.43 × 846.30
4. Step 4: Simplify right side
   2,162.55x = 2,744,068.51
5. Step 5: Solve for x
   x = 2,744,068.51/2,162.55
6. Step 6: Final answer
   x = 1,268.90