Finding the Fourth Proportional to 3,670.02, 5,064.48 and 1,991.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,670.02 : 5,064.48 = 1,991.39 : x
2. Step 2: Convert to fraction form
   3,670.02/5,064.48 = 1,991.39/x
3. Step 3: Cross multiply
   3,670.02x = 5,064.48 × 1,991.39
4. Step 4: Simplify right side
   3,670.02x = 10,085,354.83
5. Step 5: Solve for x
   x = 10,085,354.83/3,670.02
6. Step 6: Final answer
   x = 2,748.04