Finding the Fourth Proportional to 1,904.32, 2,628.15 and 1,158.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,904.32 : 2,628.15 = 1,158.12 : x
2. Step 2: Convert to fraction form
   1,904.32/2,628.15 = 1,158.12/x
3. Step 3: Cross multiply
   1,904.32x = 2,628.15 × 1,158.12
4. Step 4: Simplify right side
   1,904.32x = 3,043,713.08
5. Step 5: Solve for x
   x = 3,043,713.08/1,904.32
6. Step 6: Final answer
   x = 1,598.32