Finding the Fourth Proportional to 1,036.58, 1,556.55 and 875.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.58 : 1,556.55 = 875.30 : x
2. Step 2: Convert to fraction form
   1,036.58/1,556.55 = 875.30/x
3. Step 3: Cross multiply
   1,036.58x = 1,556.55 × 875.30
4. Step 4: Simplify right side
   1,036.58x = 1,362,448.22
5. Step 5: Solve for x
   x = 1,362,448.22/1,036.58
6. Step 6: Final answer
   x = 1,314.37