Finding the Fourth Proportional to 1,662.34, 2,492.15 and 784.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.34 : 2,492.15 = 784.39 : x
2. Step 2: Convert to fraction form
   1,662.34/2,492.15 = 784.39/x
3. Step 3: Cross multiply
   1,662.34x = 2,492.15 × 784.39
4. Step 4: Simplify right side
   1,662.34x = 1,954,813.62
5. Step 5: Solve for x
   x = 1,954,813.62/1,662.34
6. Step 6: Final answer
   x = 1,175.94