Finding the Fourth Proportional to 1,261.62, 1,891.31 and 530.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,261.62 : 1,891.31 = 530.82 : x
2. Step 2: Convert to fraction form
   1,261.62/1,891.31 = 530.82/x
3. Step 3: Cross multiply
   1,261.62x = 1,891.31 × 530.82
4. Step 4: Simplify right side
   1,261.62x = 1,003,942.52
5. Step 5: Solve for x
   x = 1,003,942.52/1,261.62
6. Step 6: Final answer
   x = 795.76