Finding the Fourth Proportional to 2,106.81, 3,159.93 and 626.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.81 : 3,159.93 = 626.00 : x
2. Step 2: Convert to fraction form
   2,106.81/3,159.93 = 626.00/x
3. Step 3: Cross multiply
   2,106.81x = 3,159.93 × 626.00
4. Step 4: Simplify right side
   2,106.81x = 1,978,100.38
5. Step 5: Solve for x
   x = 1,978,100.38/2,106.81
6. Step 6: Final answer
   x = 938.91