Finding the Fourth Proportional to 1,380.06, 2,068.47 and 893.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380.06 : 2,068.47 = 893.39 : x
2. Step 2: Convert to fraction form
   1,380.06/2,068.47 = 893.39/x
3. Step 3: Cross multiply
   1,380.06x = 2,068.47 × 893.39
4. Step 4: Simplify right side
   1,380.06x = 1,847,940.07
5. Step 5: Solve for x
   x = 1,847,940.07/1,380.06
6. Step 6: Final answer
   x = 1,339.03