Finding the Fourth Proportional to 1,931.62, 2,892.28 and 1,316.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.62 : 2,892.28 = 1,316.53 : x
2. Step 2: Convert to fraction form
   1,931.62/2,892.28 = 1,316.53/x
3. Step 3: Cross multiply
   1,931.62x = 2,892.28 × 1,316.53
4. Step 4: Simplify right side
   1,931.62x = 3,807,773.39
5. Step 5: Solve for x
   x = 3,807,773.39/1,931.62
6. Step 6: Final answer
   x = 1,971.28