Finding the Fourth Proportional to 2,130.94, 3,196.50 and 670.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,130.94 : 3,196.50 = 670.06 : x
2. Step 2: Convert to fraction form
   2,130.94/3,196.50 = 670.06/x
3. Step 3: Cross multiply
   2,130.94x = 3,196.50 × 670.06
4. Step 4: Simplify right side
   2,130.94x = 2,141,846.79
5. Step 5: Solve for x
   x = 2,141,846.79/2,130.94
6. Step 6: Final answer
   x = 1,005.12