Finding the Fourth Proportional to 1,113.31, 1,667.67 and 1,052.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113.31 : 1,667.67 = 1,052.70 : x
2. Step 2: Convert to fraction form
   1,113.31/1,667.67 = 1,052.70/x
3. Step 3: Cross multiply
   1,113.31x = 1,667.67 × 1,052.70
4. Step 4: Simplify right side
   1,113.31x = 1,755,556.21
5. Step 5: Solve for x
   x = 1,755,556.21/1,113.31
6. Step 6: Final answer
   x = 1,576.88