Finding the Fourth Proportional to 2,131.25, 3,196.52 and 670.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.25 : 3,196.52 = 670.07 : x
2. Step 2: Convert to fraction form
   2,131.25/3,196.52 = 670.07/x
3. Step 3: Cross multiply
   2,131.25x = 3,196.52 × 670.07
4. Step 4: Simplify right side
   2,131.25x = 2,141,877.85
5. Step 5: Solve for x
   x = 2,141,877.85/2,131.25
6. Step 6: Final answer
   x = 1,004.99