Finding the Fourth Proportional to 1,112.84, 1,535.46 and 670.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.84 : 1,535.46 = 670.76 : x
2. Step 2: Convert to fraction form
   1,112.84/1,535.46 = 670.76/x
3. Step 3: Cross multiply
   1,112.84x = 1,535.46 × 670.76
4. Step 4: Simplify right side
   1,112.84x = 1,029,925.15
5. Step 5: Solve for x
   x = 1,029,925.15/1,112.84
6. Step 6: Final answer
   x = 925.49