Finding the Fourth Proportional to 1,592.04, 2,389.86 and 1,407.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,592.04 : 2,389.86 = 1,407.90 : x
2. Step 2: Convert to fraction form
   1,592.04/2,389.86 = 1,407.90/x
3. Step 3: Cross multiply
   1,592.04x = 2,389.86 × 1,407.90
4. Step 4: Simplify right side
   1,592.04x = 3,364,683.89
5. Step 5: Solve for x
   x = 3,364,683.89/1,592.04
6. Step 6: Final answer
   x = 2,113.44