Finding the Fourth Proportional to 1,901.60, 2,623.98 and 1,155.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,901.60 : 2,623.98 = 1,155.56 : x
2. Step 2: Convert to fraction form
   1,901.60/2,623.98 = 1,155.56/x
3. Step 3: Cross multiply
   1,901.60x = 2,623.98 × 1,155.56
4. Step 4: Simplify right side
   1,901.60x = 3,032,166.33
5. Step 5: Solve for x
   x = 3,032,166.33/1,901.60
6. Step 6: Final answer
   x = 1,594.53