Finding the Fourth Proportional to 1,068.31, 1,602.73 and 520.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.31 : 1,602.73 = 520.37 : x
2. Step 2: Convert to fraction form
   1,068.31/1,602.73 = 520.37/x
3. Step 3: Cross multiply
   1,068.31x = 1,602.73 × 520.37
4. Step 4: Simplify right side
   1,068.31x = 834,008.33
5. Step 5: Solve for x
   x = 834,008.33/1,068.31
6. Step 6: Final answer
   x = 780.68