Finding the Fourth Proportional to 1,926.72, 2,888.64 and 900.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,926.72 : 2,888.64 = 900.48 : x
2. Step 2: Convert to fraction form
   1,926.72/2,888.64 = 900.48/x
3. Step 3: Cross multiply
   1,926.72x = 2,888.64 × 900.48
4. Step 4: Simplify right side
   1,926.72x = 2,601,162.55
5. Step 5: Solve for x
   x = 2,601,162.55/1,926.72
6. Step 6: Final answer
   x = 1,350.05