Finding the Fourth Proportional to 1,953.52, 2,695.56 and 1,290.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,953.52 : 2,695.56 = 1,290.64 : x
2. Step 2: Convert to fraction form
   1,953.52/2,695.56 = 1,290.64/x
3. Step 3: Cross multiply
   1,953.52x = 2,695.56 × 1,290.64
4. Step 4: Simplify right side
   1,953.52x = 3,478,997.56
5. Step 5: Solve for x
   x = 3,478,997.56/1,953.52
6. Step 6: Final answer
   x = 1,780.89