Finding the Fourth Proportional to 1,617.82, 2,426.18 and 521.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617.82 : 2,426.18 = 521.93 : x
2. Step 2: Convert to fraction form
   1,617.82/2,426.18 = 521.93/x
3. Step 3: Cross multiply
   1,617.82x = 2,426.18 × 521.93
4. Step 4: Simplify right side
   1,617.82x = 1,266,299.58
5. Step 5: Solve for x
   x = 1,266,299.58/1,617.82
6. Step 6: Final answer
   x = 782.72