Finding the Fourth Proportional to 1,345.58, 1,856.88 and 748.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.58 : 1,856.88 = 748.11 : x
2. Step 2: Convert to fraction form
   1,345.58/1,856.88 = 748.11/x
3. Step 3: Cross multiply
   1,345.58x = 1,856.88 × 748.11
4. Step 4: Simplify right side
   1,345.58x = 1,389,150.50
5. Step 5: Solve for x
   x = 1,389,150.50/1,345.58
6. Step 6: Final answer
   x = 1,032.38