Finding the Fourth Proportional to 1,029.89, 1,421.35 and 610.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,029.89 : 1,421.35 = 610.37 : x
2. Step 2: Convert to fraction form
   1,029.89/1,421.35 = 610.37/x
3. Step 3: Cross multiply
   1,029.89x = 1,421.35 × 610.37
4. Step 4: Simplify right side
   1,029.89x = 867,549.40
5. Step 5: Solve for x
   x = 867,549.40/1,029.89
6. Step 6: Final answer
   x = 842.37