Finding the Fourth Proportional to 1,899.32, 2,620.34 and 1,153.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.32 : 2,620.34 = 1,153.00 : x
2. Step 2: Convert to fraction form
   1,899.32/2,620.34 = 1,153.00/x
3. Step 3: Cross multiply
   1,899.32x = 2,620.34 × 1,153.00
4. Step 4: Simplify right side
   1,899.32x = 3,021,238.92
5. Step 5: Solve for x
   x = 3,021,238.92/1,899.32
6. Step 6: Final answer
   x = 1,590.70