Finding the Fourth Proportional to 1,298.89, 1,792.84 and 906.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298.89 : 1,792.84 = 906.04 : x
2. Step 2: Convert to fraction form
   1,298.89/1,792.84 = 906.04/x
3. Step 3: Cross multiply
   1,298.89x = 1,792.84 × 906.04
4. Step 4: Simplify right side
   1,298.89x = 1,624,375.79
5. Step 5: Solve for x
   x = 1,624,375.79/1,298.89
6. Step 6: Final answer
   x = 1,250.59