Finding the Fourth Proportional to 1,339.53, 1,843.05 and 1,308.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.53 : 1,843.05 = 1,308.45 : x
2. Step 2: Convert to fraction form
   1,339.53/1,843.05 = 1,308.45/x
3. Step 3: Cross multiply
   1,339.53x = 1,843.05 × 1,308.45
4. Step 4: Simplify right side
   1,339.53x = 2,411,538.77
5. Step 5: Solve for x
   x = 2,411,538.77/1,339.53
6. Step 6: Final answer
   x = 1,800.29