Finding the Fourth Proportional to 1,971.32, 2,720.25 and 1,131.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,971.32 : 2,720.25 = 1,131.95 : x
2. Step 2: Convert to fraction form
   1,971.32/2,720.25 = 1,131.95/x
3. Step 3: Cross multiply
   1,971.32x = 2,720.25 × 1,131.95
4. Step 4: Simplify right side
   1,971.32x = 3,079,193.79
5. Step 5: Solve for x
   x = 3,079,193.79/1,971.32
6. Step 6: Final answer
   x = 1,562.00