Finding the Fourth Proportional to 1,200.49, 1,799.58 and 615.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.49 : 1,799.58 = 615.77 : x
2. Step 2: Convert to fraction form
   1,200.49/1,799.58 = 615.77/x
3. Step 3: Cross multiply
   1,200.49x = 1,799.58 × 615.77
4. Step 4: Simplify right side
   1,200.49x = 1,108,118.38
5. Step 5: Solve for x
   x = 1,108,118.38/1,200.49
6. Step 6: Final answer
   x = 923.06