Finding the Fourth Proportional to 1,112.55, 1,535.51 and 670.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.55 : 1,535.51 = 670.52 : x
2. Step 2: Convert to fraction form
   1,112.55/1,535.51 = 670.52/x
3. Step 3: Cross multiply
   1,112.55x = 1,535.51 × 670.52
4. Step 4: Simplify right side
   1,112.55x = 1,029,586.81
5. Step 5: Solve for x
   x = 1,029,586.81/1,112.55
6. Step 6: Final answer
   x = 925.43