Finding the Fourth Proportional to 1,945.76, 2,917.01 and 904.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.76 : 2,917.01 = 904.43 : x
2. Step 2: Convert to fraction form
   1,945.76/2,917.01 = 904.43/x
3. Step 3: Cross multiply
   1,945.76x = 2,917.01 × 904.43
4. Step 4: Simplify right side
   1,945.76x = 2,638,240.91
5. Step 5: Solve for x
   x = 2,638,240.91/1,945.76
6. Step 6: Final answer
   x = 1,355.90