Finding the Fourth Proportional to 1,340.76, 1,858.16 and 1,320.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.76 : 1,858.16 = 1,320.27 : x
2. Step 2: Convert to fraction form
   1,340.76/1,858.16 = 1,320.27/x
3. Step 3: Cross multiply
   1,340.76x = 1,858.16 × 1,320.27
4. Step 4: Simplify right side
   1,340.76x = 2,453,266.30
5. Step 5: Solve for x
   x = 2,453,266.30/1,340.76
6. Step 6: Final answer
   x = 1,829.76