Finding the Fourth Proportional to 1,357.83, 1,875.15 and 917.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.83 : 1,875.15 = 917.46 : x
2. Step 2: Convert to fraction form
   1,357.83/1,875.15 = 917.46/x
3. Step 3: Cross multiply
   1,357.83x = 1,875.15 × 917.46
4. Step 4: Simplify right side
   1,357.83x = 1,720,375.12
5. Step 5: Solve for x
   x = 1,720,375.12/1,357.83
6. Step 6: Final answer
   x = 1,267.00