Finding the Fourth Proportional to 1,402.17, 1,933.43 and 904.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.17 : 1,933.43 = 904.15 : x
2. Step 2: Convert to fraction form
   1,402.17/1,933.43 = 904.15/x
3. Step 3: Cross multiply
   1,402.17x = 1,933.43 × 904.15
4. Step 4: Simplify right side
   1,402.17x = 1,748,110.73
5. Step 5: Solve for x
   x = 1,748,110.73/1,402.17
6. Step 6: Final answer
   x = 1,246.72