Finding the Fourth Proportional to 1,052.21, 1,451.90 and 610.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,052.21 : 1,451.90 = 610.03 : x
2. Step 2: Convert to fraction form
   1,052.21/1,451.90 = 610.03/x
3. Step 3: Cross multiply
   1,052.21x = 1,451.90 × 610.03
4. Step 4: Simplify right side
   1,052.21x = 885,699.51
5. Step 5: Solve for x
   x = 885,699.51/1,052.21
6. Step 6: Final answer
   x = 841.75