Finding the Fourth Proportional to 2,131.15, 3,192.63 and 1,307.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.15 : 3,192.63 = 1,307.02 : x
2. Step 2: Convert to fraction form
   2,131.15/3,192.63 = 1,307.02/x
3. Step 3: Cross multiply
   2,131.15x = 3,192.63 × 1,307.02
4. Step 4: Simplify right side
   2,131.15x = 4,172,831.26
5. Step 5: Solve for x
   x = 4,172,831.26/2,131.15
6. Step 6: Final answer
   x = 1,958.02