Finding the Fourth Proportional to 1,340.18, 1,997.11 and 1,296.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.18 : 1,997.11 = 1,296.13 : x
2. Step 2: Convert to fraction form
   1,340.18/1,997.11 = 1,296.13/x
3. Step 3: Cross multiply
   1,340.18x = 1,997.11 × 1,296.13
4. Step 4: Simplify right side
   1,340.18x = 2,588,497.72
5. Step 5: Solve for x
   x = 2,588,497.72/1,340.18
6. Step 6: Final answer
   x = 1,931.46