Finding the Fourth Proportional to 2,359.89, 3,256.71 and 1,312.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.89 : 3,256.71 = 1,312.02 : x
2. Step 2: Convert to fraction form
   2,359.89/3,256.71 = 1,312.02/x
3. Step 3: Cross multiply
   2,359.89x = 3,256.71 × 1,312.02
4. Step 4: Simplify right side
   2,359.89x = 4,272,868.65
5. Step 5: Solve for x
   x = 4,272,868.65/2,359.89
6. Step 6: Final answer
   x = 1,810.62