Finding the Fourth Proportional to 1,003.12, 1,384.23 and 610.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.12 : 1,384.23 = 610.10 : x
2. Step 2: Convert to fraction form
   1,003.12/1,384.23 = 610.10/x
3. Step 3: Cross multiply
   1,003.12x = 1,384.23 × 610.10
4. Step 4: Simplify right side
   1,003.12x = 844,518.72
5. Step 5: Solve for x
   x = 844,518.72/1,003.12
6. Step 6: Final answer
   x = 841.89