Finding the Fourth Proportional to 1,618.72, 2,427.57 and 522.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618.72 : 2,427.57 = 522.82 : x
2. Step 2: Convert to fraction form
   1,618.72/2,427.57 = 522.82/x
3. Step 3: Cross multiply
   1,618.72x = 2,427.57 × 522.82
4. Step 4: Simplify right side
   1,618.72x = 1,269,182.15
5. Step 5: Solve for x
   x = 1,269,182.15/1,618.72
6. Step 6: Final answer
   x = 784.07