Finding the Fourth Proportional to 1,404.02, 1,937.86 and 938

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.02 : 1,937.86 = 938 : x
2. Step 2: Convert to fraction form
   1,404.02/1,937.86 = 938/x
3. Step 3: Cross multiply
   1,404.02x = 1,937.86 × 938
4. Step 4: Simplify right side
   1,404.02x = 1,817,712.68
5. Step 5: Solve for x
   x = 1,817,712.68/1,404.02
6. Step 6: Final answer
   x = 1,294.65