Finding the Fourth Proportional to 2,462.47, 3,692.31 and 999.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,462.47 : 3,692.31 = 999.91 : x
2. Step 2: Convert to fraction form
   2,462.47/3,692.31 = 999.91/x
3. Step 3: Cross multiply
   2,462.47x = 3,692.31 × 999.91
4. Step 4: Simplify right side
   2,462.47x = 3,691,977.69
5. Step 5: Solve for x
   x = 3,691,977.69/2,462.47
6. Step 6: Final answer
   x = 1,499.30