Finding the Fourth Proportional to 1,870.30, 2,802.21 and 1,543.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.30 : 2,802.21 = 1,543.06 : x
2. Step 2: Convert to fraction form
   1,870.30/2,802.21 = 1,543.06/x
3. Step 3: Cross multiply
   1,870.30x = 2,802.21 × 1,543.06
4. Step 4: Simplify right side
   1,870.30x = 4,323,978.16
5. Step 5: Solve for x
   x = 4,323,978.16/1,870.30
6. Step 6: Final answer
   x = 2,311.92