Finding the Fourth Proportional to 1,899.48, 2,621.59 and 1,153.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.48 : 2,621.59 = 1,153.93 : x
2. Step 2: Convert to fraction form
   1,899.48/2,621.59 = 1,153.93/x
3. Step 3: Cross multiply
   1,899.48x = 2,621.59 × 1,153.93
4. Step 4: Simplify right side
   1,899.48x = 3,025,131.35
5. Step 5: Solve for x
   x = 3,025,131.35/1,899.48
6. Step 6: Final answer
   x = 1,592.61