Finding the Fourth Proportional to 1,925.15, 2,885.71 and 1,091.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,925.15 : 2,885.71 = 1,091.17 : x
2. Step 2: Convert to fraction form
   1,925.15/2,885.71 = 1,091.17/x
3. Step 3: Cross multiply
   1,925.15x = 2,885.71 × 1,091.17
4. Step 4: Simplify right side
   1,925.15x = 3,148,800.18
5. Step 5: Solve for x
   x = 3,148,800.18/1,925.15
6. Step 6: Final answer
   x = 1,635.61