Finding the Fourth Proportional to 1,018.39, 1,523.58 and 785.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.39 : 1,523.58 = 785.52 : x
2. Step 2: Convert to fraction form
   1,018.39/1,523.58 = 785.52/x
3. Step 3: Cross multiply
   1,018.39x = 1,523.58 × 785.52
4. Step 4: Simplify right side
   1,018.39x = 1,196,802.56
5. Step 5: Solve for x
   x = 1,196,802.56/1,018.39
6. Step 6: Final answer
   x = 1,175.19