Finding the Fourth Proportional to 1,970.82, 2,953.58 and 1,091.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.82 : 2,953.58 = 1,091.25 : x
2. Step 2: Convert to fraction form
   1,970.82/2,953.58 = 1,091.25/x
3. Step 3: Cross multiply
   1,970.82x = 2,953.58 × 1,091.25
4. Step 4: Simplify right side
   1,970.82x = 3,223,088.72
5. Step 5: Solve for x
   x = 3,223,088.72/1,970.82
6. Step 6: Final answer
   x = 1,635.40