Finding the Fourth Proportional to 1,953.72, 2,925.72 and 1,129.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,953.72 : 2,925.72 = 1,129.95 : x
2. Step 2: Convert to fraction form
   1,953.72/2,925.72 = 1,129.95/x
3. Step 3: Cross multiply
   1,953.72x = 2,925.72 × 1,129.95
4. Step 4: Simplify right side
   1,953.72x = 3,305,917.31
5. Step 5: Solve for x
   x = 3,305,917.31/1,953.72
6. Step 6: Final answer
   x = 1,692.11