Finding the Fourth Proportional to 1,112.88, 1,535.93 and 670.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.88 : 1,535.93 = 670.89 : x
2. Step 2: Convert to fraction form
   1,112.88/1,535.93 = 670.89/x
3. Step 3: Cross multiply
   1,112.88x = 1,535.93 × 670.89
4. Step 4: Simplify right side
   1,112.88x = 1,030,436.72
5. Step 5: Solve for x
   x = 1,030,436.72/1,112.88
6. Step 6: Final answer
   x = 925.92