Finding the Fourth Proportional to 1,493.78, 2,061.38 and 904.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,493.78 : 2,061.38 = 904.22 : x
2. Step 2: Convert to fraction form
   1,493.78/2,061.38 = 904.22/x
3. Step 3: Cross multiply
   1,493.78x = 2,061.38 × 904.22
4. Step 4: Simplify right side
   1,493.78x = 1,863,941.02
5. Step 5: Solve for x
   x = 1,863,941.02/1,493.78
6. Step 6: Final answer
   x = 1,247.80