Finding the Fourth Proportional to 1,346.62, 1,858.18 and 786.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.62 : 1,858.18 = 786.68 : x
2. Step 2: Convert to fraction form
   1,346.62/1,858.18 = 786.68/x
3. Step 3: Cross multiply
   1,346.62x = 1,858.18 × 786.68
4. Step 4: Simplify right side
   1,346.62x = 1,461,793.04
5. Step 5: Solve for x
   x = 1,461,793.04/1,346.62
6. Step 6: Final answer
   x = 1,085.53