Finding the Fourth Proportional to 1,400.31, 1,932.60 and 902.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.31 : 1,932.60 = 902.76 : x
2. Step 2: Convert to fraction form
   1,400.31/1,932.60 = 902.76/x
3. Step 3: Cross multiply
   1,400.31x = 1,932.60 × 902.76
4. Step 4: Simplify right side
   1,400.31x = 1,744,673.98
5. Step 5: Solve for x
   x = 1,744,673.98/1,400.31
6. Step 6: Final answer
   x = 1,245.92