Finding the Fourth Proportional to 1,672.05, 2,307.20 and 925.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.05 : 2,307.20 = 925.82 : x
2. Step 2: Convert to fraction form
   1,672.05/2,307.20 = 925.82/x
3. Step 3: Cross multiply
   1,672.05x = 2,307.20 × 925.82
4. Step 4: Simplify right side
   1,672.05x = 2,136,047.27
5. Step 5: Solve for x
   x = 2,136,047.27/1,672.05
6. Step 6: Final answer
   x = 1,277.51