Finding the Fourth Proportional to 1,494.80, 2,061.70 and 904.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,494.80 : 2,061.70 = 904.60 : x
2. Step 2: Convert to fraction form
   1,494.80/2,061.70 = 904.60/x
3. Step 3: Cross multiply
   1,494.80x = 2,061.70 × 904.60
4. Step 4: Simplify right side
   1,494.80x = 1,865,013.82
5. Step 5: Solve for x
   x = 1,865,013.82/1,494.80
6. Step 6: Final answer
   x = 1,247.67