Finding the Fourth Proportional to 5,142,804.77, 7,714,128.56 and 1,252,298.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,142,804.77 : 7,714,128.56 = 1,252,298.30 : x
2. Step 2: Convert to fraction form
   5,142,804.77/7,714,128.56 = 1,252,298.30/x
3. Step 3: Cross multiply
   5,142,804.77x = 7,714,128.56 × 1,252,298.30
4. Step 4: Simplify right side
   5,142,804.77x = 9,660,390,058,533.30
5. Step 5: Solve for x
   x = 9,660,390,058,533.30/5,142,804.77
6. Step 6: Final answer
   x = 1,878,428.31