Finding the Fourth Proportional to 2,145.32, 3,219.60 and 846.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.32 : 3,219.60 = 846.08 : x
2. Step 2: Convert to fraction form
   2,145.32/3,219.60 = 846.08/x
3. Step 3: Cross multiply
   2,145.32x = 3,219.60 × 846.08
4. Step 4: Simplify right side
   2,145.32x = 2,724,039.17
5. Step 5: Solve for x
   x = 2,724,039.17/2,145.32
6. Step 6: Final answer
   x = 1,269.76