Finding the Fourth Proportional to 1,112.12, 1,667.94 and 526.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.12 : 1,667.94 = 526.87 : x
2. Step 2: Convert to fraction form
   1,112.12/1,667.94 = 526.87/x
3. Step 3: Cross multiply
   1,112.12x = 1,667.94 × 526.87
4. Step 4: Simplify right side
   1,112.12x = 878,787.55
5. Step 5: Solve for x
   x = 878,787.55/1,112.12
6. Step 6: Final answer
   x = 790.19