Finding the Fourth Proportional to 1,637.37, 2,453.72 and 1,219.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,637.37 : 2,453.72 = 1,219.01 : x
2. Step 2: Convert to fraction form
   1,637.37/2,453.72 = 1,219.01/x
3. Step 3: Cross multiply
   1,637.37x = 2,453.72 × 1,219.01
4. Step 4: Simplify right side
   1,637.37x = 2,991,090.85
5. Step 5: Solve for x
   x = 2,991,090.85/1,637.37
6. Step 6: Final answer
   x = 1,826.77