Finding the Fourth Proportional to 1,369.57, 2,055.10 and 907.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.57 : 2,055.10 = 907.57 : x
2. Step 2: Convert to fraction form
   1,369.57/2,055.10 = 907.57/x
3. Step 3: Cross multiply
   1,369.57x = 2,055.10 × 907.57
4. Step 4: Simplify right side
   1,369.57x = 1,865,137.89
5. Step 5: Solve for x
   x = 1,865,137.89/1,369.57
6. Step 6: Final answer
   x = 1,361.84