Finding the Fourth Proportional to 1,662.45, 2,493.96 and 623.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.45 : 2,493.96 = 623.15 : x
2. Step 2: Convert to fraction form
   1,662.45/2,493.96 = 623.15/x
3. Step 3: Cross multiply
   1,662.45x = 2,493.96 × 623.15
4. Step 4: Simplify right side
   1,662.45x = 1,554,111.17
5. Step 5: Solve for x
   x = 1,554,111.17/1,662.45
6. Step 6: Final answer
   x = 934.83