Finding the Fourth Proportional to 1,499.72, 2,246.48 and 1,390.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.72 : 2,246.48 = 1,390.36 : x
2. Step 2: Convert to fraction form
   1,499.72/2,246.48 = 1,390.36/x
3. Step 3: Cross multiply
   1,499.72x = 2,246.48 × 1,390.36
4. Step 4: Simplify right side
   1,499.72x = 3,123,415.93
5. Step 5: Solve for x
   x = 3,123,415.93/1,499.72
6. Step 6: Final answer
   x = 2,082.67