Finding the Fourth Proportional to 1,899.61, 2,621.59 and 1,060.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.61 : 2,621.59 = 1,060.31 : x
2. Step 2: Convert to fraction form
   1,899.61/2,621.59 = 1,060.31/x
3. Step 3: Cross multiply
   1,899.61x = 2,621.59 × 1,060.31
4. Step 4: Simplify right side
   1,899.61x = 2,779,702.00
5. Step 5: Solve for x
   x = 2,779,702.00/1,899.61
6. Step 6: Final answer
   x = 1,463.30