Finding the Fourth Proportional to 1,779.47, 2,457.03 and 1,385.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,779.47 : 2,457.03 = 1,385.81 : x
2. Step 2: Convert to fraction form
   1,779.47/2,457.03 = 1,385.81/x
3. Step 3: Cross multiply
   1,779.47x = 2,457.03 × 1,385.81
4. Step 4: Simplify right side
   1,779.47x = 3,404,978.87
5. Step 5: Solve for x
   x = 3,404,978.87/1,779.47
6. Step 6: Final answer
   x = 1,913.48