Finding the Fourth Proportional to 1,250.78, 1,872.52 and 904.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,250.78 : 1,872.52 = 904.10 : x
2. Step 2: Convert to fraction form
   1,250.78/1,872.52 = 904.10/x
3. Step 3: Cross multiply
   1,250.78x = 1,872.52 × 904.10
4. Step 4: Simplify right side
   1,250.78x = 1,692,945.33
5. Step 5: Solve for x
   x = 1,692,945.33/1,250.78
6. Step 6: Final answer
   x = 1,353.51