Finding the Fourth Proportional to 1,784.82, 2,463.36 and 998.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,784.82 : 2,463.36 = 998.72 : x
2. Step 2: Convert to fraction form
   1,784.82/2,463.36 = 998.72/x
3. Step 3: Cross multiply
   1,784.82x = 2,463.36 × 998.72
4. Step 4: Simplify right side
   1,784.82x = 2,460,206.90
5. Step 5: Solve for x
   x = 2,460,206.90/1,784.82
6. Step 6: Final answer
   x = 1,378.41