Finding the Fourth Proportional to 1,999.40, 2,997.50 and 1,011.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,999.40 : 2,997.50 = 1,011.69 : x
2. Step 2: Convert to fraction form
   1,999.40/2,997.50 = 1,011.69/x
3. Step 3: Cross multiply
   1,999.40x = 2,997.50 × 1,011.69
4. Step 4: Simplify right side
   1,999.40x = 3,032,535.72
5. Step 5: Solve for x
   x = 3,032,535.72/1,999.40
6. Step 6: Final answer
   x = 1,516.73