Finding the Fourth Proportional to 1,402.05, 1,934.14 and 904.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.05 : 1,934.14 = 904.50 : x
2. Step 2: Convert to fraction form
   1,402.05/1,934.14 = 904.50/x
3. Step 3: Cross multiply
   1,402.05x = 1,934.14 × 904.50
4. Step 4: Simplify right side
   1,402.05x = 1,749,429.63
5. Step 5: Solve for x
   x = 1,749,429.63/1,402.05
6. Step 6: Final answer
   x = 1,247.77