Finding the Fourth Proportional to 1,377.02, 1,899.42 and 904.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.02 : 1,899.42 = 904.94 : x
2. Step 2: Convert to fraction form
   1,377.02/1,899.42 = 904.94/x
3. Step 3: Cross multiply
   1,377.02x = 1,899.42 × 904.94
4. Step 4: Simplify right side
   1,377.02x = 1,718,851.64
5. Step 5: Solve for x
   x = 1,718,851.64/1,377.02
6. Step 6: Final answer
   x = 1,248.24