Finding the Fourth Proportional to 1,564.58, 2,335.39 and 1,380.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,564.58 : 2,335.39 = 1,380.04 : x
2. Step 2: Convert to fraction form
   1,564.58/2,335.39 = 1,380.04/x
3. Step 3: Cross multiply
   1,564.58x = 2,335.39 × 1,380.04
4. Step 4: Simplify right side
   1,564.58x = 3,222,931.62
5. Step 5: Solve for x
   x = 3,222,931.62/1,564.58
6. Step 6: Final answer
   x = 2,059.93