Finding the Fourth Proportional to 1,080.27, 1,618.38 and 530.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,080.27 : 1,618.38 = 530.82 : x
2. Step 2: Convert to fraction form
   1,080.27/1,618.38 = 530.82/x
3. Step 3: Cross multiply
   1,080.27x = 1,618.38 × 530.82
4. Step 4: Simplify right side
   1,080.27x = 859,068.47
5. Step 5: Solve for x
   x = 859,068.47/1,080.27
6. Step 6: Final answer
   x = 795.23