Finding the Fourth Proportional to 2,637.16, 3,953.00 and 1,405.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.16 : 3,953.00 = 1,405.76 : x
2. Step 2: Convert to fraction form
   2,637.16/3,953.00 = 1,405.76/x
3. Step 3: Cross multiply
   2,637.16x = 3,953.00 × 1,405.76
4. Step 4: Simplify right side
   2,637.16x = 5,556,953.03
5. Step 5: Solve for x
   x = 5,556,953.03/2,637.16
6. Step 6: Final answer
   x = 2,107.18