Finding the Fourth Proportional to 1,343.12, 1,854.72 and 846.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.12 : 1,854.72 = 846.64 : x
2. Step 2: Convert to fraction form
   1,343.12/1,854.72 = 846.64/x
3. Step 3: Cross multiply
   1,343.12x = 1,854.72 × 846.64
4. Step 4: Simplify right side
   1,343.12x = 1,570,280.14
5. Step 5: Solve for x
   x = 1,570,280.14/1,343.12
6. Step 6: Final answer
   x = 1,169.13