Finding the Fourth Proportional to 1,402.11, 1,932.83 and 897.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.11 : 1,932.83 = 897.91 : x
2. Step 2: Convert to fraction form
   1,402.11/1,932.83 = 897.91/x
3. Step 3: Cross multiply
   1,402.11x = 1,932.83 × 897.91
4. Step 4: Simplify right side
   1,402.11x = 1,735,507.39
5. Step 5: Solve for x
   x = 1,735,507.39/1,402.11
6. Step 6: Final answer
   x = 1,237.78