Finding the Fourth Proportional to 1,404.90, 1,938.38 and 907.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.90 : 1,938.38 = 907.35 : x
2. Step 2: Convert to fraction form
   1,404.90/1,938.38 = 907.35/x
3. Step 3: Cross multiply
   1,404.90x = 1,938.38 × 907.35
4. Step 4: Simplify right side
   1,404.90x = 1,758,784.56
5. Step 5: Solve for x
   x = 1,758,784.56/1,404.90
6. Step 6: Final answer
   x = 1,251.89