Finding the Fourth Proportional to 2,127.81, 3,188.64 and 1,345.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,127.81 : 3,188.64 = 1,345.62 : x
2. Step 2: Convert to fraction form
   2,127.81/3,188.64 = 1,345.62/x
3. Step 3: Cross multiply
   2,127.81x = 3,188.64 × 1,345.62
4. Step 4: Simplify right side
   2,127.81x = 4,290,697.76
5. Step 5: Solve for x
   x = 4,290,697.76/2,127.81
6. Step 6: Final answer
   x = 2,016.49