Finding the Fourth Proportional to 1,490.46, 2,056.50 and 900.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.46 : 2,056.50 = 900.98 : x
2. Step 2: Convert to fraction form
   1,490.46/2,056.50 = 900.98/x
3. Step 3: Cross multiply
   1,490.46x = 2,056.50 × 900.98
4. Step 4: Simplify right side
   1,490.46x = 1,852,873.89
5. Step 5: Solve for x
   x = 1,852,873.89/1,490.46
6. Step 6: Final answer
   x = 1,243.16