Finding the Fourth Proportional to 1,343.74, 1,854.02 and 900.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.74 : 1,854.02 = 900.88 : x
2. Step 2: Convert to fraction form
   1,343.74/1,854.02 = 900.88/x
3. Step 3: Cross multiply
   1,343.74x = 1,854.02 × 900.88
4. Step 4: Simplify right side
   1,343.74x = 1,670,249.54
5. Step 5: Solve for x
   x = 1,670,249.54/1,343.74
6. Step 6: Final answer
   x = 1,242.99