Finding the Fourth Proportional to 1,369.76, 2,056.46 and 785.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.76 : 2,056.46 = 785.34 : x
2. Step 2: Convert to fraction form
   1,369.76/2,056.46 = 785.34/x
3. Step 3: Cross multiply
   1,369.76x = 2,056.46 × 785.34
4. Step 4: Simplify right side
   1,369.76x = 1,615,016.37
5. Step 5: Solve for x
   x = 1,615,016.37/1,369.76
6. Step 6: Final answer
   x = 1,179.05