Finding the Fourth Proportional to 2,191.88, 3,025.18 and 1,307.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.88 : 3,025.18 = 1,307.74 : x
2. Step 2: Convert to fraction form
   2,191.88/3,025.18 = 1,307.74/x
3. Step 3: Cross multiply
   2,191.88x = 3,025.18 × 1,307.74
4. Step 4: Simplify right side
   2,191.88x = 3,956,148.89
5. Step 5: Solve for x
   x = 3,956,148.89/2,191.88
6. Step 6: Final answer
   x = 1,804.91