Finding the Fourth Proportional to 1,372.97, 1,893.96 and 900.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.97 : 1,893.96 = 900.74 : x
2. Step 2: Convert to fraction form
   1,372.97/1,893.96 = 900.74/x
3. Step 3: Cross multiply
   1,372.97x = 1,893.96 × 900.74
4. Step 4: Simplify right side
   1,372.97x = 1,705,956.06
5. Step 5: Solve for x
   x = 1,705,956.06/1,372.97
6. Step 6: Final answer
   x = 1,242.53