Finding the Fourth Proportional to 2,451.67, 3,381.89 and 1,555.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,451.67 : 3,381.89 = 1,555.07 : x
2. Step 2: Convert to fraction form
   2,451.67/3,381.89 = 1,555.07/x
3. Step 3: Cross multiply
   2,451.67x = 3,381.89 × 1,555.07
4. Step 4: Simplify right side
   2,451.67x = 5,259,051.00
5. Step 5: Solve for x
   x = 5,259,051.00/2,451.67
6. Step 6: Final answer
   x = 2,145.09