Finding the Fourth Proportional to 1,428.95, 1,971.04 and 925.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428.95 : 1,971.04 = 925.46 : x
2. Step 2: Convert to fraction form
   1,428.95/1,971.04 = 925.46/x
3. Step 3: Cross multiply
   1,428.95x = 1,971.04 × 925.46
4. Step 4: Simplify right side
   1,428.95x = 1,824,118.68
5. Step 5: Solve for x
   x = 1,824,118.68/1,428.95
6. Step 6: Final answer
   x = 1,276.54