Finding the Fourth Proportional to 1,386.14, 2,065.52 and 1,342.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386.14 : 2,065.52 = 1,342.10 : x
2. Step 2: Convert to fraction form
   1,386.14/2,065.52 = 1,342.10/x
3. Step 3: Cross multiply
   1,386.14x = 2,065.52 × 1,342.10
4. Step 4: Simplify right side
   1,386.14x = 2,772,117.35
5. Step 5: Solve for x
   x = 2,772,117.35/1,386.14
6. Step 6: Final answer
   x = 1,999.89