Finding the Fourth Proportional to 1,404.93, 1,938.42 and 907.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.93 : 1,938.42 = 907.74 : x
2. Step 2: Convert to fraction form
   1,404.93/1,938.42 = 907.74/x
3. Step 3: Cross multiply
   1,404.93x = 1,938.42 × 907.74
4. Step 4: Simplify right side
   1,404.93x = 1,759,581.37
5. Step 5: Solve for x
   x = 1,759,581.37/1,404.93
6. Step 6: Final answer
   x = 1,252.43