Finding the Fourth Proportional to 1,904.63, 2,628.61 and 1,158.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,904.63 : 2,628.61 = 1,158.53 : x
2. Step 2: Convert to fraction form
   1,904.63/2,628.61 = 1,158.53/x
3. Step 3: Cross multiply
   1,904.63x = 2,628.61 × 1,158.53
4. Step 4: Simplify right side
   1,904.63x = 3,045,307.50
5. Step 5: Solve for x
   x = 3,045,307.50/1,904.63
6. Step 6: Final answer
   x = 1,598.90