Finding the Fourth Proportional to 2,127.63, 3,191.31 and 1,306.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,127.63 : 3,191.31 = 1,306.02 : x
2. Step 2: Convert to fraction form
   2,127.63/3,191.31 = 1,306.02/x
3. Step 3: Cross multiply
   2,127.63x = 3,191.31 × 1,306.02
4. Step 4: Simplify right side
   2,127.63x = 4,167,914.69
5. Step 5: Solve for x
   x = 4,167,914.69/2,127.63
6. Step 6: Final answer
   x = 1,958.95