Finding the Fourth Proportional to 5,091.56, 7,636.60 and 1,394.00

Step by Step Solution

1. Step 1: Write the proportion equation
   5,091.56 : 7,636.60 = 1,394.00 : x
2. Step 2: Convert to fraction form
   5,091.56/7,636.60 = 1,394.00/x
3. Step 3: Cross multiply
   5,091.56x = 7,636.60 × 1,394.00
4. Step 4: Simplify right side
   5,091.56x = 10,645,436.01
5. Step 5: Solve for x
   x = 10,645,436.01/5,091.56
6. Step 6: Final answer
   x = 2,090.80