Finding the Fourth Proportional to 1,380.01, 2,068.02 and 1,066.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380.01 : 2,068.02 = 1,066.57 : x
2. Step 2: Convert to fraction form
   1,380.01/2,068.02 = 1,066.57/x
3. Step 3: Cross multiply
   1,380.01x = 2,068.02 × 1,066.57
4. Step 4: Simplify right side
   1,380.01x = 2,205,688.09
5. Step 5: Solve for x
   x = 2,205,688.09/1,380.01
6. Step 6: Final answer
   x = 1,598.31