Finding the Fourth Proportional to 1,543.39, 2,308.30 and 1,380.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,543.39 : 2,308.30 = 1,380.17 : x
2. Step 2: Convert to fraction form
   1,543.39/2,308.30 = 1,380.17/x
3. Step 3: Cross multiply
   1,543.39x = 2,308.30 × 1,380.17
4. Step 4: Simplify right side
   1,543.39x = 3,185,848.73
5. Step 5: Solve for x
   x = 3,185,848.73/1,543.39
6. Step 6: Final answer
   x = 2,064.19