Finding the Fourth Proportional to 2,070.01, 3,106.56 and 1,291.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.01 : 3,106.56 = 1,291.15 : x
2. Step 2: Convert to fraction form
   2,070.01/3,106.56 = 1,291.15/x
3. Step 3: Cross multiply
   2,070.01x = 3,106.56 × 1,291.15
4. Step 4: Simplify right side
   2,070.01x = 4,011,034.94
5. Step 5: Solve for x
   x = 4,011,034.94/2,070.01
6. Step 6: Final answer
   x = 1,937.69