Finding the Fourth Proportional to 2,130.88, 3,196.86 and 1,090.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,130.88 : 3,196.86 = 1,090.48 : x
2. Step 2: Convert to fraction form
   2,130.88/3,196.86 = 1,090.48/x
3. Step 3: Cross multiply
   2,130.88x = 3,196.86 × 1,090.48
4. Step 4: Simplify right side
   2,130.88x = 3,486,111.89
5. Step 5: Solve for x
   x = 3,486,111.89/2,130.88
6. Step 6: Final answer
   x = 1,636.00