Finding the Fourth Proportional to 1,228.39, 1,841.00 and 610.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228.39 : 1,841.00 = 610.76 : x
2. Step 2: Convert to fraction form
   1,228.39/1,841.00 = 610.76/x
3. Step 3: Cross multiply
   1,228.39x = 1,841.00 × 610.76
4. Step 4: Simplify right side
   1,228.39x = 1,124,410.71
5. Step 5: Solve for x
   x = 1,124,410.71/1,228.39
6. Step 6: Final answer
   x = 915.36