Finding the Fourth Proportional to 1,036.82, 1,430.86 and 617.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.82 : 1,430.86 = 617.07 : x
2. Step 2: Convert to fraction form
   1,036.82/1,430.86 = 617.07/x
3. Step 3: Cross multiply
   1,036.82x = 1,430.86 × 617.07
4. Step 4: Simplify right side
   1,036.82x = 882,940.78
5. Step 5: Solve for x
   x = 882,940.78/1,036.82
6. Step 6: Final answer
   x = 851.59